diff --git a/CHANGELOG.md b/CHANGELOG.md
index f0ac315e0d..8f74ce4349 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -67,6 +67,7 @@ if input key is empty, or input data contains empty key.
   * via `ServiceMsg` TypeURLs (e.g. `message.action='/cosmos.bank.v1beta1.Msg/Send'`) does not work anymore,
   * via legacy `msg.Type()` (e.g. `message.action='send'`) is being deprecated, new `Msg`s won't emit these events.
   * Please use concrete `Msg` TypeURLs instead (e.g. `message.action='/cosmos.bank.v1beta1.MsgSend'`).
+* [\#9291](https://github.com/cosmos/cosmos-sdk/pull/9291) Migration scripts prior to v0.38 have been removed from the CLI `migrate` command. The oldest supported migration is v0.39->v0.42.
 
 ### API Breaking Changes
 
diff --git a/STABLE_RELEASES.md b/STABLE_RELEASES.md
index fd6a882135..6e5d2da00a 100644
--- a/STABLE_RELEASES.md
+++ b/STABLE_RELEASES.md
@@ -4,19 +4,16 @@
 
 Only the following release series are currently supported and receive bug fixes:
 
-The `0.37.x` release series will continue receiving bug fixes until the Cosmos Hub
-migrates to a newer release of the Cosmos-SDK.
+* **0.39 «Launchpad»** will be supported until 6 months after **0.42.0** is published. A fairly strict **bugfix-only** rule applies to pull requests that are requested to be included into a stable point-release.
+* **0.42 «Stargate»** is the latest stable release.
 
-* **0.37** will continue receiving bug fixes until the Cosmos Hub migrates to a newer release series of the Cosmos-SDK.
-* **0.39 «Launchpad»** will be supported until 6 months after **0.40.0** is published. A fairly strict **bugfix-only** rule applies to pull requests that are requested to be included into a stable point-release.
-
-The **0.39 «Launchpad»** release series is maintained in compliance with the **Stable Release Policy** as described in this document.
+The **0.42 «Stargate»** release series is maintained in compliance with the **Stable Release Policy** as described in this document.
 
 ## Stable Release Policy
 
 This policy presently applies *only* to the following release series:
 
-* **0.39 «Launchpad»**
+* **0.42 «Stargate»**
 
 ### Point Releases
 
@@ -48,6 +45,10 @@ priority is to minimise the risk caused by changes that are not strictly require
 be correlated with minimising the size of such changes. As such, the same bug may need to be fixed in different
 ways in stable releases and `master` branch.
 
+### Migrations
+
+To smoothen the update to the latest stable release, the SDK includes a set of CLI commands for managing migrations between SDK versions, under the `migrate` subcommand. Only migration scripts between stable releases are included. For the current release, **0.39 «Launchpad»** and later migrations are supported.
+
 ### What qualifies as a Stable Release Update (SRU)
 
 * **High-impact bugs**
@@ -86,12 +87,12 @@ As rule of thumb, the following changes will **NOT** be automatically accepted i
  
 ## Stable Release Exception - Procedure
 
-1. Check that the bug is either fixed or not reproducible in `master`. It is, in general, not appropriate to release bug fixes for stable releases without first testing them in `master`. Please apply the label [0.39 «Launchpad»](https://github.com/cosmos/cosmos-sdk/labels/0.39%20LTS%20%28Launchpad%29) to the issue.
+1. Check that the bug is either fixed or not reproducible in `master`. It is, in general, not appropriate to release bug fixes for stable releases without first testing them in `master`. Please apply the label [0.42 «Stargate»](https://github.com/cosmos/cosmos-sdk/labels/0.42%20LTS%20%28Stargate%29) to the issue.
 2. Add a comment to the issue and ensure it contains the following information (see the bug template below):
  * **[Impact]** An explanation of the bug on users and justification for backporting the fix to the stable release.
  * A **[Test Case]** section containing detailed instructions on how to reproduce the bug.
  * A **[Regression Potential]** section with a clear assessment on how regressions are most likely to manifest as a result of the pull request that aims to fix the bug in the target stable release.
-3. **Stable Release Managers** will review and discuss the PR. Once *consensus* surrounding the rationale has been reached and the technical review has successfully concluded, the pull request will be merged in the respective point-release target branch (e.g. `release/launchpad/0.39.X` being `X` the Launchpad's upcoming point-release) and the PR included in the point-release's respective milestone (e.g. `0.39.5`).
+3. **Stable Release Managers** will review and discuss the PR. Once *consensus* surrounding the rationale has been reached and the technical review has successfully concluded, the pull request will be merged in the respective point-release target branch (e.g. `release/v0.42.x`) and the PR included in the point-release's respective milestone (e.g. `0.42.5`).
 
 ### Stable Release Exception - Bug template
 
@@ -102,7 +103,7 @@ Brief xplanation of the effects of the bug on users and a justification for back
 
 #### Test Case
 
-Detailed instructions on how to reproduce the bug on Launchpad's most recently published point-release.
+Detailed instructions on how to reproduce the bug on Stargate's most recently published point-release.
 
 #### Regression Potential
 
@@ -124,8 +125,7 @@ Their responsibilites include:
 
 The Stable Release Managers are appointed by the Interchain Foundation.
 
-*Stable Release Managers* for the **0.39 «Launchpad»** release series follow:
+*Stable Release Managers* for the **0.42 «Stargate»** release series follow:
 
 * @alessio - Alessio Treglia
-* @clevinson - Cory Levinson-
-* @ethanfrey - Ethan Frey
+* @clevinson - Cory Levinson
diff --git a/x/auth/legacy/v034/types.go b/x/auth/legacy/v034/types.go
index 83fa2d36ea..e028b08740 100644
--- a/x/auth/legacy/v034/types.go
+++ b/x/auth/legacy/v034/types.go
@@ -1,3 +1,6 @@
+// Package v034 is used for legacy migration scripts. Actual migration scripts
+// for v034 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v034
 
diff --git a/x/auth/legacy/v036/migrate.go b/x/auth/legacy/v036/migrate.go
deleted file mode 100644
index 2ab4aa1437..0000000000
--- a/x/auth/legacy/v036/migrate.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// DONTCOVER
-package v036
-
-import (
-	v034auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v034"
-)
-
-// Migrate accepts exported genesis state from v0.34 and migrates it to v0.36
-// genesis state. This migration removes the CollectedFees coins from the old
-// FeeCollectorKeeper.
-func Migrate(oldGenState v034auth.GenesisState) GenesisState {
-	return NewGenesisState(oldGenState.Params)
-}
diff --git a/x/auth/legacy/v036/migrate_test.go b/x/auth/legacy/v036/migrate_test.go
deleted file mode 100644
index 739c43223f..0000000000
--- a/x/auth/legacy/v036/migrate_test.go
+++ /dev/null
@@ -1,26 +0,0 @@
-package v036
-
-import (
-	"testing"
-
-	"github.com/cosmos/cosmos-sdk/types"
-	v034auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v034"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestMigrate(t *testing.T) {
-	var genesisState GenesisState
-	require.NotPanics(t, func() {
-		genesisState = Migrate(v034auth.GenesisState{
-			CollectedFees: types.Coins{
-				{
-					Amount: types.NewInt(10),
-					Denom:  "stake",
-				},
-			},
-			Params: v034auth.Params{}, // forwarded structure: filling and checking will be testing a no-op
-		})
-	})
-	require.Equal(t, genesisState, GenesisState{Params: v034auth.Params{}})
-}
diff --git a/x/auth/legacy/v036/types.go b/x/auth/legacy/v036/types.go
deleted file mode 100644
index 908165f265..0000000000
--- a/x/auth/legacy/v036/types.go
+++ /dev/null
@@ -1,18 +0,0 @@
-// DONTCOVER
-package v036
-
-import v034auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v034"
-
-const (
-	ModuleName = "auth"
-)
-
-type (
-	GenesisState struct {
-		Params v034auth.Params `json:"params"`
-	}
-)
-
-func NewGenesisState(params v034auth.Params) GenesisState {
-	return GenesisState{params}
-}
diff --git a/x/auth/legacy/v038/migrate.go b/x/auth/legacy/v038/migrate.go
deleted file mode 100644
index 46947075c8..0000000000
--- a/x/auth/legacy/v038/migrate.go
+++ /dev/null
@@ -1,52 +0,0 @@
-package v038
-
-import (
-	v036auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v036"
-	v036genaccounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v036"
-)
-
-// Migrate accepts exported genesis state from v0.34 and migrates it to v0.38
-// genesis state.
-func Migrate(authGenState v036auth.GenesisState, genAccountsGenState v036genaccounts.GenesisState) GenesisState {
-	accounts := make(GenesisAccounts, len(genAccountsGenState))
-
-	for i, acc := range genAccountsGenState {
-		var genAccount GenesisAccount
-
-		baseAccount := NewBaseAccount(acc.Address, acc.Coins.Sort(), nil, acc.AccountNumber, acc.Sequence)
-
-		switch {
-		case !acc.OriginalVesting.IsZero():
-			baseVestingAccount := NewBaseVestingAccount(
-				baseAccount, acc.OriginalVesting.Sort(), acc.DelegatedFree.Sort(),
-				acc.DelegatedVesting.Sort(), acc.EndTime,
-			)
-
-			if acc.StartTime != 0 && acc.EndTime != 0 {
-				// continuous vesting account type
-				genAccount = NewContinuousVestingAccountRaw(baseVestingAccount, acc.StartTime)
-			} else if acc.EndTime != 0 {
-				// delayed vesting account type
-				genAccount = NewDelayedVestingAccountRaw(baseVestingAccount)
-			}
-
-		case acc.ModuleName != "":
-			// module account type
-			genAccount = NewModuleAccount(baseAccount, acc.ModuleName, acc.ModulePermissions...)
-
-		default:
-			// standard account type
-			genAccount = baseAccount
-		}
-
-		accounts[i] = genAccount
-	}
-
-	accounts = SanitizeGenesisAccounts(accounts)
-
-	if err := ValidateGenAccounts(accounts); err != nil {
-		panic(err)
-	}
-
-	return NewGenesisState(authGenState.Params, accounts)
-}
diff --git a/x/auth/legacy/v038/migrate_test.go b/x/auth/legacy/v038/migrate_test.go
deleted file mode 100644
index e83ccfe8e2..0000000000
--- a/x/auth/legacy/v038/migrate_test.go
+++ /dev/null
@@ -1,159 +0,0 @@
-package v038
-
-import (
-	"testing"
-	"time"
-
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	v034auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v034"
-	v036auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v036"
-	v036genaccounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v036"
-
-	"github.com/stretchr/testify/require"
-)
-
-func accAddressFromBech32(t *testing.T, addrStr string) sdk.AccAddress {
-	addr, err := sdk.AccAddressFromBech32(addrStr)
-	require.NoError(t, err)
-	return addr
-}
-
-func TestMigrate(t *testing.T) {
-	var genesisState GenesisState
-
-	params := v034auth.Params{
-		MaxMemoCharacters:      10,
-		TxSigLimit:             10,
-		TxSizeCostPerByte:      10,
-		SigVerifyCostED25519:   10,
-		SigVerifyCostSecp256k1: 10,
-	}
-
-	acc1 := v036genaccounts.GenesisAccount{
-		Address:       accAddressFromBech32(t, "cosmos1f9xjhxm0plzrh9cskf4qee4pc2xwp0n0556gh0"),
-		Coins:         sdk.NewCoins(sdk.NewInt64Coin("stake", 400000)),
-		Sequence:      1,
-		AccountNumber: 1,
-	}
-	acc2 := v036genaccounts.GenesisAccount{
-		Address:           accAddressFromBech32(t, "cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh"),
-		Coins:             sdk.NewCoins(sdk.NewInt64Coin("stake", 400000000)),
-		Sequence:          4,
-		AccountNumber:     2,
-		ModuleName:        "bonded_tokens_pool",
-		ModulePermissions: []string{"burner", "staking"},
-	}
-	acc3 := v036genaccounts.GenesisAccount{
-		Address:         accAddressFromBech32(t, "cosmos17n9sztlhx32tfy0tg0zc2ttmkeeth50yyuv9he"),
-		Coins:           sdk.NewCoins(sdk.NewInt64Coin("stake", 10000205)),
-		OriginalVesting: sdk.NewCoins(sdk.NewInt64Coin("stake", 10000205)),
-		StartTime:       time.Now().Unix(),
-		EndTime:         time.Now().Add(48 * time.Hour).Unix(),
-		Sequence:        5,
-		AccountNumber:   3,
-	}
-	acc4 := v036genaccounts.GenesisAccount{
-		Address:         accAddressFromBech32(t, "cosmos1fmk5elg4r62mlexd36tqjcwyafs7mek0js5m4d"),
-		Coins:           sdk.NewCoins(sdk.NewInt64Coin("stake", 10000205)),
-		OriginalVesting: sdk.NewCoins(sdk.NewInt64Coin("stake", 10000205)),
-		EndTime:         time.Now().Add(48 * time.Hour).Unix(),
-		Sequence:        15,
-		AccountNumber:   4,
-	}
-
-	require.NotPanics(t, func() {
-		genesisState = Migrate(
-			v036auth.GenesisState{
-				Params: params,
-			},
-			v036genaccounts.GenesisState{acc1, acc2, acc3, acc4},
-		)
-	})
-
-	expectedAcc1 := NewBaseAccount(acc1.Address, acc1.Coins, nil, acc1.AccountNumber, acc1.Sequence)
-	expectedAcc2 := NewModuleAccount(
-		NewBaseAccount(acc2.Address, acc2.Coins, nil, acc2.AccountNumber, acc2.Sequence),
-		acc2.ModuleName, acc2.ModulePermissions...,
-	)
-	expectedAcc3 := NewContinuousVestingAccountRaw(
-		NewBaseVestingAccount(
-			NewBaseAccount(acc3.Address, acc3.Coins, nil, acc3.AccountNumber, acc3.Sequence),
-			acc3.OriginalVesting, acc3.DelegatedFree, acc3.DelegatedVesting, acc3.EndTime,
-		),
-		acc3.StartTime,
-	)
-	expectedAcc4 := NewDelayedVestingAccountRaw(
-		NewBaseVestingAccount(
-			NewBaseAccount(acc4.Address, acc4.Coins, nil, acc4.AccountNumber, acc4.Sequence),
-			acc4.OriginalVesting, acc4.DelegatedFree, acc4.DelegatedVesting, acc4.EndTime,
-		),
-	)
-
-	require.Equal(
-		t, genesisState, GenesisState{
-			Params:   params,
-			Accounts: GenesisAccounts{expectedAcc1, expectedAcc2, expectedAcc3, expectedAcc4},
-		},
-	)
-}
-
-func TestMigrateInvalid(t *testing.T) {
-	testCases := []struct {
-		name string
-		acc  v036genaccounts.GenesisAccount
-	}{
-		{
-			"module account with invalid name",
-			v036genaccounts.GenesisAccount{
-				Address:           accAddressFromBech32(t, "cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh"),
-				Coins:             sdk.NewCoins(sdk.NewInt64Coin("stake", 400000000)),
-				Sequence:          4,
-				AccountNumber:     2,
-				ModuleName:        "    ",
-				ModulePermissions: []string{"burner", "staking"},
-			},
-		},
-		{
-			"module account with invalid permissions",
-			v036genaccounts.GenesisAccount{
-				Address:           accAddressFromBech32(t, "cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh"),
-				Coins:             sdk.NewCoins(sdk.NewInt64Coin("stake", 400000000)),
-				Sequence:          4,
-				AccountNumber:     2,
-				ModuleName:        "bonded_tokens_pool",
-				ModulePermissions: []string{""},
-			},
-		},
-		{
-			"module account with invalid address",
-			v036genaccounts.GenesisAccount{
-				Address:           accAddressFromBech32(t, "cosmos17n9sztlhx32tfy0tg0zc2ttmkeeth50yyuv9he"),
-				Coins:             sdk.NewCoins(sdk.NewInt64Coin("stake", 400000000)),
-				Sequence:          4,
-				AccountNumber:     2,
-				ModuleName:        "bonded_tokens_pool",
-				ModulePermissions: []string{"burner", "staking"},
-			},
-		},
-	}
-
-	for _, tc := range testCases {
-		tc := tc
-		t.Run(tc.name, func(t *testing.T) {
-			require.Panics(t, func() {
-				Migrate(
-					v036auth.GenesisState{
-						Params: v034auth.Params{
-							MaxMemoCharacters:      10,
-							TxSigLimit:             10,
-							TxSizeCostPerByte:      10,
-							SigVerifyCostED25519:   10,
-							SigVerifyCostSecp256k1: 10,
-						},
-					},
-					v036genaccounts.GenesisState{tc.acc},
-				)
-			})
-		})
-	}
-}
diff --git a/x/auth/legacy/v038/types.go b/x/auth/legacy/v038/types.go
index a590988940..8bda3813f5 100644
--- a/x/auth/legacy/v038/types.go
+++ b/x/auth/legacy/v038/types.go
@@ -1,3 +1,6 @@
+// Package v038 is used for legacy migration scripts. Actual migration scripts
+// for v038 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 package v038
 
 // DONTCOVER
diff --git a/x/auth/legacy/v039/migrate.go b/x/auth/legacy/v039/migrate.go
deleted file mode 100644
index c29048fca5..0000000000
--- a/x/auth/legacy/v039/migrate.go
+++ /dev/null
@@ -1,60 +0,0 @@
-package v039
-
-import (
-	"fmt"
-
-	v038auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v038"
-)
-
-// Migrate accepts exported genesis state from v0.38 and migrates it to v0.39
-// genesis state.
-func Migrate(oldAuthGenState v038auth.GenesisState) GenesisState {
-	accounts := make(v038auth.GenesisAccounts, len(oldAuthGenState.Accounts))
-
-	for i, acc := range oldAuthGenState.Accounts {
-		switch t := acc.(type) {
-		case *v038auth.BaseAccount:
-			accounts[i] = NewBaseAccount(t.Address, t.Coins, t.PubKey, t.AccountNumber, t.Sequence)
-
-		case *v038auth.BaseVestingAccount:
-			accounts[i] = NewBaseVestingAccount(
-				NewBaseAccount(t.Address, t.Coins, t.PubKey, t.AccountNumber, t.Sequence),
-				t.OriginalVesting, t.DelegatedFree, t.DelegatedVesting, t.EndTime,
-			)
-
-		case *v038auth.ContinuousVestingAccount:
-			accounts[i] = NewContinuousVestingAccountRaw(
-				NewBaseVestingAccount(
-					NewBaseAccount(t.Address, t.Coins, t.PubKey, t.AccountNumber, t.Sequence),
-					t.OriginalVesting, t.DelegatedFree, t.DelegatedVesting, t.EndTime,
-				),
-				t.StartTime,
-			)
-
-		case *v038auth.DelayedVestingAccount:
-			accounts[i] = NewDelayedVestingAccountRaw(
-				NewBaseVestingAccount(
-					NewBaseAccount(t.Address, t.Coins, t.PubKey, t.AccountNumber, t.Sequence),
-					t.OriginalVesting, t.DelegatedFree, t.DelegatedVesting, t.EndTime,
-				),
-			)
-
-		case *v038auth.ModuleAccount:
-			accounts[i] = NewModuleAccount(
-				NewBaseAccount(t.Address, t.Coins, t.PubKey, t.AccountNumber, t.Sequence),
-				t.Name, t.Permissions...,
-			)
-
-		default:
-			panic(fmt.Sprintf("unexpected account type: %T", acc))
-		}
-	}
-
-	accounts = v038auth.SanitizeGenesisAccounts(accounts)
-
-	if err := v038auth.ValidateGenAccounts(accounts); err != nil {
-		panic(err)
-	}
-
-	return NewGenesisState(oldAuthGenState.Params, accounts)
-}
diff --git a/x/auth/legacy/v039/migrate_test.go b/x/auth/legacy/v039/migrate_test.go
deleted file mode 100644
index 6972789c00..0000000000
--- a/x/auth/legacy/v039/migrate_test.go
+++ /dev/null
@@ -1,104 +0,0 @@
-package v039_test
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-
-	"github.com/cosmos/cosmos-sdk/codec"
-	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
-	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	v038auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v038"
-	v039auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v039"
-)
-
-func TestMigrate(t *testing.T) {
-	aminoCdc := codec.NewLegacyAmino()
-	v039auth.RegisterLegacyAminoCodec(aminoCdc)
-
-	pub1 := ed25519.GenPrivKeyFromSecret([]byte("acc1")).PubKey()
-	pub2 := secp256k1.GenPrivKeyFromSecret([]byte("acc2")).PubKey()
-
-	acc1 := v038auth.BaseAccount{
-		Address:       sdk.AccAddress(pub1.Address()),
-		Coins:         sdk.NewCoins(sdk.NewInt64Coin("stake", 400000)),
-		Sequence:      1,
-		AccountNumber: 1,
-		PubKey:        pub1,
-	}
-	acc2 := v038auth.BaseAccount{
-		Address:       sdk.AccAddress(pub2.Address()),
-		Coins:         sdk.NewCoins(sdk.NewInt64Coin("stake", 400000)),
-		Sequence:      2,
-		AccountNumber: 2,
-		PubKey:        pub2,
-	}
-
-	migrated := v039auth.Migrate(
-		v038auth.GenesisState{
-			Accounts: v038auth.GenesisAccounts{&acc1, &acc2},
-		},
-	)
-
-	expectedAcc1 := v039auth.NewBaseAccount(acc1.Address, acc1.Coins, acc1.PubKey, acc1.AccountNumber, acc1.Sequence)
-	expectedAcc2 := v039auth.NewBaseAccount(acc2.Address, acc2.Coins, acc2.PubKey, acc2.AccountNumber, acc2.Sequence)
-
-	require.Equal(
-		t, migrated, v039auth.GenesisState{
-			Accounts: v038auth.GenesisAccounts{expectedAcc1, expectedAcc2},
-		},
-	)
-
-	json, err := aminoCdc.MarshalJSONIndent(migrated, "", "  ")
-	require.NoError(t, err)
-
-	expectedJSON := `{
-  "params": {
-    "max_memo_characters": "0",
-    "tx_sig_limit": "0",
-    "tx_size_cost_per_byte": "0",
-    "sig_verify_cost_ed25519": "0",
-    "sig_verify_cost_secp256k1": "0"
-  },
-  "accounts": [
-    {
-      "type": "cosmos-sdk/Account",
-      "value": {
-        "address": "cosmos1j7skdhh9raxdmfhmcy2gxz8hgn0jnhfmujjsfe",
-        "coins": [
-          {
-            "denom": "stake",
-            "amount": "400000"
-          }
-        ],
-        "public_key": {
-          "type": "tendermint/PubKeyEd25519",
-          "value": "eB0AcLMLKFRNFfh4XAAMstexfAIUQQCDnfjLZ2KJg+A="
-        },
-        "account_number": "1",
-        "sequence": "1"
-      }
-    },
-    {
-      "type": "cosmos-sdk/Account",
-      "value": {
-        "address": "cosmos1v57fx2l2rt6ehujuu99u2fw05779m5e2ux4z2h",
-        "coins": [
-          {
-            "denom": "stake",
-            "amount": "400000"
-          }
-        ],
-        "public_key": {
-          "type": "tendermint/PubKeySecp256k1",
-          "value": "AruDygh5HprMOpHOEato85dLgAsybMJVyxBGUa3KuWCr"
-        },
-        "account_number": "2",
-        "sequence": "2"
-      }
-    }
-  ]
-}`
-	require.Equal(t, expectedJSON, string(json))
-}
diff --git a/x/bank/legacy/v036/types.go b/x/bank/legacy/v036/types.go
index ada3684048..081a41fc11 100644
--- a/x/bank/legacy/v036/types.go
+++ b/x/bank/legacy/v036/types.go
@@ -1,3 +1,6 @@
+// Package v036 is used for legacy migration scripts. Actual migration scripts
+// for v036 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v036
 
@@ -12,9 +15,3 @@ type (
 		Supply sdk.Coins `json:"supply" yaml:"supply"`
 	}
 )
-
-func EmptyGenesisState() GenesisState {
-	return GenesisState{
-		Supply: sdk.NewCoins(), // leave this empty as it's filled on initialization
-	}
-}
diff --git a/x/bank/legacy/v038/types.go b/x/bank/legacy/v038/types.go
index eba8d3518c..563182c107 100644
--- a/x/bank/legacy/v038/types.go
+++ b/x/bank/legacy/v038/types.go
@@ -1,3 +1,6 @@
+// Package v038 is used for legacy migration scripts. Actual migration scripts
+// for v038 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 package v038
 
 // DONTCOVER
diff --git a/x/distribution/legacy/v034/types.go b/x/distribution/legacy/v034/types.go
index 4e8b209ad6..e32b92a5cf 100644
--- a/x/distribution/legacy/v034/types.go
+++ b/x/distribution/legacy/v034/types.go
@@ -1,3 +1,6 @@
+// Package v034 is used for legacy migration scripts. Actual migration scripts
+// for v034 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v034
 
diff --git a/x/distribution/legacy/v036/migrate.go b/x/distribution/legacy/v036/migrate.go
deleted file mode 100644
index 7cbe3b99cb..0000000000
--- a/x/distribution/legacy/v036/migrate.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package v036
-
-import (
-	v034distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v034"
-)
-
-// Migrate accepts exported genesis state from v0.34 and migrates it to v0.36
-// genesis state. All entries are identical except for validator slashing events
-// which now include the period.
-func Migrate(oldGenState v034distr.GenesisState) GenesisState {
-	// migrate slash events which now have the period included
-	slashEvents := make([]ValidatorSlashEventRecord, len(oldGenState.ValidatorSlashEvents))
-	for i, se := range oldGenState.ValidatorSlashEvents {
-		slashEvents[i] = ValidatorSlashEventRecord{
-			ValidatorAddress: se.ValidatorAddress,
-			Height:           se.Height,
-			Period:           se.Event.ValidatorPeriod,
-			Event:            se.Event,
-		}
-	}
-
-	return NewGenesisState(
-		oldGenState.FeePool, oldGenState.CommunityTax, oldGenState.BaseProposerReward,
-		oldGenState.BonusProposerReward, oldGenState.WithdrawAddrEnabled,
-		oldGenState.DelegatorWithdrawInfos, oldGenState.PreviousProposer,
-		oldGenState.OutstandingRewards, oldGenState.ValidatorAccumulatedCommissions,
-		oldGenState.ValidatorHistoricalRewards, oldGenState.ValidatorCurrentRewards,
-		oldGenState.DelegatorStartingInfos, slashEvents,
-	)
-}
diff --git a/x/distribution/legacy/v036/migrate_test.go b/x/distribution/legacy/v036/migrate_test.go
deleted file mode 100644
index d0cd69e5e5..0000000000
--- a/x/distribution/legacy/v036/migrate_test.go
+++ /dev/null
@@ -1,64 +0,0 @@
-package v036
-
-import (
-	"testing"
-
-	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
-	"github.com/cosmos/cosmos-sdk/types"
-	v034distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v034"
-
-	"github.com/stretchr/testify/require"
-)
-
-var (
-	priv       = secp256k1.GenPrivKey()
-	addr       = types.AccAddress(priv.PubKey().Address())
-	valAddr, _ = types.ValAddressFromBech32(addr.String())
-
-	event = v034distr.ValidatorSlashEvent{
-		ValidatorPeriod: 1,
-		Fraction:        types.Dec{},
-	}
-)
-
-func TestMigrate(t *testing.T) {
-	var genesisState GenesisState
-	require.NotPanics(t, func() {
-		genesisState = Migrate(v034distr.GenesisState{
-			ValidatorSlashEvents: []v034distr.ValidatorSlashEventRecord{
-				{
-					ValidatorAddress: valAddr,
-					Height:           1,
-					Event:            event,
-				},
-			},
-		})
-	})
-
-	require.Equal(t, genesisState.ValidatorSlashEvents[0], ValidatorSlashEventRecord{
-		ValidatorAddress: valAddr,
-		Height:           1,
-		Period:           event.ValidatorPeriod,
-		Event:            event,
-	})
-}
-
-func TestMigrateEmptyRecord(t *testing.T) {
-	var genesisState GenesisState
-
-	require.NotPanics(t, func() {
-		genesisState = Migrate(v034distr.GenesisState{
-			ValidatorSlashEvents: []v034distr.ValidatorSlashEventRecord{{}},
-		})
-	})
-
-	require.Equal(t, genesisState.ValidatorSlashEvents[0], ValidatorSlashEventRecord{
-		ValidatorAddress: valAddr,
-		Height:           0,
-		Period:           0,
-		Event: v034distr.ValidatorSlashEvent{
-			ValidatorPeriod: 0,
-			Fraction:        types.Dec{},
-		},
-	})
-}
diff --git a/x/distribution/legacy/v036/types.go b/x/distribution/legacy/v036/types.go
index 2a11518b4a..32431b7a0d 100644
--- a/x/distribution/legacy/v036/types.go
+++ b/x/distribution/legacy/v036/types.go
@@ -1,3 +1,6 @@
+// Package v036 is used for legacy migration scripts. Actual migration scripts
+// for v036 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v036
 
diff --git a/x/distribution/legacy/v038/migrate.go b/x/distribution/legacy/v038/migrate.go
deleted file mode 100644
index 73e933da45..0000000000
--- a/x/distribution/legacy/v038/migrate.go
+++ /dev/null
@@ -1,26 +0,0 @@
-package v038
-
-// DONTCOVER
-
-import (
-	v036distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v036"
-)
-
-// Migrate accepts exported genesis state from v0.36 or v0.37 and migrates it to
-// v0.38 genesis state. All entries are identical except for parameters.
-func Migrate(oldGenState v036distr.GenesisState) GenesisState {
-	params := Params{
-		CommunityTax:        oldGenState.CommunityTax,
-		BaseProposerReward:  oldGenState.BaseProposerReward,
-		BonusProposerReward: oldGenState.BonusProposerReward,
-		WithdrawAddrEnabled: oldGenState.WithdrawAddrEnabled,
-	}
-
-	return NewGenesisState(
-		params, oldGenState.FeePool,
-		oldGenState.DelegatorWithdrawInfos, oldGenState.PreviousProposer,
-		oldGenState.OutstandingRewards, oldGenState.ValidatorAccumulatedCommissions,
-		oldGenState.ValidatorHistoricalRewards, oldGenState.ValidatorCurrentRewards,
-		oldGenState.DelegatorStartingInfos, oldGenState.ValidatorSlashEvents,
-	)
-}
diff --git a/x/distribution/legacy/v038/types.go b/x/distribution/legacy/v038/types.go
index 335fbc1245..0422472fbb 100644
--- a/x/distribution/legacy/v038/types.go
+++ b/x/distribution/legacy/v038/types.go
@@ -1,3 +1,6 @@
+// Package v038 is used for legacy migration scripts. Actual migration scripts
+// for v038 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 package v038
 
 import (
diff --git a/x/evidence/legacy/v038/types.go b/x/evidence/legacy/v038/types.go
index 8d3cb4f609..b42a72f0ae 100644
--- a/x/evidence/legacy/v038/types.go
+++ b/x/evidence/legacy/v038/types.go
@@ -1,3 +1,6 @@
+// Package v038 is used for legacy migration scripts. Actual migration scripts
+// for v038 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 package v038
 
 import (
diff --git a/x/genaccounts/doc.go b/x/genaccounts/doc.go
deleted file mode 100644
index 2d255ad465..0000000000
--- a/x/genaccounts/doc.go
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
-Package genaccounts is now deprecated.
-
-IMPORTANT: This module has been replaced by ADR 011: Generalize Module Accounts.
-The ADR can be found here: https://github.com/cosmos/cosmos-sdk/blob/master/docs/architecture/adr-011-generalize-genesis-accounts.md.
-
-Genesis accounts that existed in the genesis application state under `app_state.accounts`
-now exists under the x/auth module's genesis state under the `app_state.auth.accounts` key.
-Migration can be performed via x/auth/legacy/v038/migrate.go. In addition, because genesis
-accounts are now generalized via an interface, it is now up to the application to
-define the concrete types and the respective client logic to add them to a genesis
-state/file. For an example implementation of the `add-genesis-account` command please
-refer to https://github.com/cosmos/gaia/pull/122.
-*/
-package genaccounts
diff --git a/x/genaccounts/legacy/v034/types.go b/x/genaccounts/legacy/v034/types.go
deleted file mode 100644
index f4bb73fa37..0000000000
--- a/x/genaccounts/legacy/v034/types.go
+++ /dev/null
@@ -1,27 +0,0 @@
-// DONTCOVER
-package v034
-
-import (
-	sdk "github.com/cosmos/cosmos-sdk/types"
-)
-
-const (
-	ModuleName = "accounts"
-)
-
-type (
-	GenesisAccount struct {
-		Address       sdk.AccAddress `json:"address"`
-		Coins         sdk.Coins      `json:"coins"`
-		Sequence      uint64         `json:"sequence_number"`
-		AccountNumber uint64         `json:"account_number"`
-
-		OriginalVesting  sdk.Coins `json:"original_vesting"`
-		DelegatedFree    sdk.Coins `json:"delegated_free"`
-		DelegatedVesting sdk.Coins `json:"delegated_vesting"`
-		StartTime        int64     `json:"start_time"`
-		EndTime          int64     `json:"end_time"`
-	}
-
-	GenesisState []GenesisAccount
-)
diff --git a/x/genaccounts/legacy/v036/migrate.go b/x/genaccounts/legacy/v036/migrate.go
deleted file mode 100644
index 4da938aeaf..0000000000
--- a/x/genaccounts/legacy/v036/migrate.go
+++ /dev/null
@@ -1,179 +0,0 @@
-// DONTCOVER
-// nolint
-package v036
-
-import (
-	"fmt"
-
-	sdk "github.com/cosmos/cosmos-sdk/types"
-	v034distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v034"
-	v034accounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v034"
-	v034gov "github.com/cosmos/cosmos-sdk/x/gov/legacy/v034"
-	v034staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v034"
-
-	"github.com/tendermint/tendermint/crypto"
-)
-
-const (
-	notBondedPoolName = "not_bonded_tokens_pool"
-	bondedPoolName    = "bonded_tokens_pool"
-	feeCollectorName  = "fee_collector"
-	mintModuleName    = "mint"
-
-	basic   = "basic"
-	minter  = "minter"
-	burner  = "burner"
-	staking = "staking"
-)
-
-// Migrate accepts exported genesis state from v0.34 and migrates it to v0.36
-// genesis state. It deletes the governance base accounts and creates the new module accounts.
-// The remaining accounts are updated to the new GenesisAccount type from 0.36
-func Migrate(
-	oldGenState v034accounts.GenesisState, fees sdk.Coins, communityPool sdk.DecCoins,
-	deposits []v034gov.DepositWithMetadata, vals v034staking.Validators, ubds []v034staking.UnbondingDelegation,
-	valOutRewards []v034distr.ValidatorOutstandingRewardsRecord, bondDenom, distrModuleName, govModuleName string,
-) GenesisState {
-
-	depositedCoinsAccAddr := sdk.AccAddress(crypto.AddressHash([]byte("govDepositedCoins")))
-	burnedDepositCoinsAccAddr := sdk.AccAddress(crypto.AddressHash([]byte("govBurnedDepositCoins")))
-
-	bondedAmt := sdk.ZeroInt()
-	notBondedAmt := sdk.ZeroInt()
-
-	// remove the two previous governance base accounts for deposits and burned
-	// coins from rejected proposals add six new module accounts:
-	// distribution, gov, mint, fee collector, bonded and not bonded pool
-	var (
-		newGenState   GenesisState
-		govCoins      sdk.Coins
-		extraAccounts = 6
-	)
-
-	for _, acc := range oldGenState {
-		switch {
-		case acc.Address.Equals(depositedCoinsAccAddr):
-			// remove gov deposits base account
-			govCoins = acc.Coins
-			extraAccounts -= 1
-
-		case acc.Address.Equals(burnedDepositCoinsAccAddr):
-			// remove gov burned deposits base account
-			extraAccounts -= 1
-
-		default:
-			newGenState = append(
-				newGenState,
-				NewGenesisAccount(
-					acc.Address, acc.Coins, acc.Sequence,
-					acc.OriginalVesting, acc.DelegatedFree, acc.DelegatedVesting,
-					acc.StartTime, acc.EndTime, "", []string{},
-				),
-			)
-		}
-	}
-
-	var expDeposits sdk.Coins
-	for _, deposit := range deposits {
-		expDeposits = expDeposits.Add(deposit.Deposit.Amount...)
-	}
-
-	if !expDeposits.IsEqual(govCoins) {
-		panic(
-			fmt.Sprintf(
-				"pre migration deposit base account coins ≠ stored deposits coins (%s ≠ %s)",
-				expDeposits.String(), govCoins.String(),
-			),
-		)
-	}
-
-	// get staking module accounts coins
-	for _, validator := range vals {
-		switch validator.Status {
-		case v034staking.Bonded:
-			bondedAmt = bondedAmt.Add(validator.Tokens)
-
-		case v034staking.Unbonding, v034staking.Unbonded:
-			notBondedAmt = notBondedAmt.Add(validator.Tokens)
-
-		default:
-			panic("invalid validator status")
-		}
-	}
-
-	for _, ubd := range ubds {
-		for _, entry := range ubd.Entries {
-			notBondedAmt = notBondedAmt.Add(entry.Balance)
-		}
-	}
-
-	bondedCoins := sdk.NewCoins(sdk.NewCoin(bondDenom, bondedAmt))
-	notBondedCoins := sdk.NewCoins(sdk.NewCoin(bondDenom, notBondedAmt))
-
-	// get distr module account coins
-	var distrDecCoins sdk.DecCoins
-	for _, reward := range valOutRewards {
-		distrDecCoins = distrDecCoins.Add(reward.OutstandingRewards...)
-	}
-
-	distrCoins, _ := distrDecCoins.Add(communityPool...).TruncateDecimal()
-
-	// get module account addresses
-	feeCollectorAddr := sdk.AccAddress(crypto.AddressHash([]byte(feeCollectorName)))
-	govAddr := sdk.AccAddress(crypto.AddressHash([]byte(govModuleName)))
-	bondedAddr := sdk.AccAddress(crypto.AddressHash([]byte(bondedPoolName)))
-	notBondedAddr := sdk.AccAddress(crypto.AddressHash([]byte(notBondedPoolName)))
-	distrAddr := sdk.AccAddress(crypto.AddressHash([]byte(distrModuleName)))
-	mintAddr := sdk.AccAddress(crypto.AddressHash([]byte(mintModuleName)))
-
-	// create module genesis accounts
-	feeCollectorModuleAcc := NewGenesisAccount(
-		feeCollectorAddr, fees, 0,
-		sdk.Coins{}, sdk.Coins{}, sdk.Coins{},
-		0, 0, feeCollectorName, []string{basic},
-	)
-	govModuleAcc := NewGenesisAccount(
-		govAddr, govCoins, 0,
-		sdk.Coins{}, sdk.Coins{}, sdk.Coins{},
-		0, 0, govModuleName, []string{burner},
-	)
-	distrModuleAcc := NewGenesisAccount(
-		distrAddr, distrCoins, 0,
-		sdk.Coins{}, sdk.Coins{}, sdk.Coins{},
-		0, 0, distrModuleName, []string{basic},
-	)
-	bondedModuleAcc := NewGenesisAccount(
-		bondedAddr, bondedCoins, 0,
-		sdk.Coins{}, sdk.Coins{}, sdk.Coins{},
-		0, 0, bondedPoolName, []string{burner, staking},
-	)
-	notBondedModuleAcc := NewGenesisAccount(
-		notBondedAddr, notBondedCoins, 0,
-		sdk.Coins{}, sdk.Coins{}, sdk.Coins{},
-		0, 0, notBondedPoolName, []string{burner, staking},
-	)
-	mintModuleAcc := NewGenesisAccount(
-		mintAddr, sdk.Coins{}, 0,
-		sdk.Coins{}, sdk.Coins{}, sdk.Coins{},
-		0, 0, mintModuleName, []string{minter},
-	)
-
-	newGenState = append(
-		newGenState,
-		[]GenesisAccount{
-			feeCollectorModuleAcc, govModuleAcc, distrModuleAcc,
-			bondedModuleAcc, notBondedModuleAcc, mintModuleAcc,
-		}...,
-	)
-
-	// verify the total number of accounts is correct
-	if len(newGenState) != len(oldGenState)+extraAccounts {
-		panic(
-			fmt.Sprintf(
-				"invalid total number of genesis accounts; got: %d, expected: %d",
-				len(newGenState), len(oldGenState)+extraAccounts),
-		)
-	}
-
-	return newGenState
-}
diff --git a/x/genaccounts/legacy/v036/migrate_test.go b/x/genaccounts/legacy/v036/migrate_test.go
deleted file mode 100644
index 09f6bb3e69..0000000000
--- a/x/genaccounts/legacy/v036/migrate_test.go
+++ /dev/null
@@ -1,126 +0,0 @@
-package v036
-
-import (
-	"testing"
-
-	"github.com/tendermint/tendermint/crypto"
-
-	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
-	"github.com/cosmos/cosmos-sdk/types"
-	v034distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v034"
-	v034accounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v034"
-	v034gov "github.com/cosmos/cosmos-sdk/x/gov/legacy/v034"
-	v034staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v034"
-
-	"github.com/stretchr/testify/require"
-)
-
-var (
-	priv                      = secp256k1.GenPrivKey()
-	addr                      = types.AccAddress(priv.PubKey().Address())
-	depositedCoinsAccAddr     = types.AccAddress(crypto.AddressHash([]byte("govDepositedCoins")))
-	burnedDepositCoinsAccAddr = types.AccAddress(crypto.AddressHash([]byte("govBurnedDepositCoins")))
-
-	coins     = types.Coins{types.NewInt64Coin(types.DefaultBondDenom, 10)}
-	halfCoins = types.Coins{types.NewInt64Coin(types.DefaultBondDenom, 5)}
-
-	accountDeposited = v034accounts.GenesisAccount{
-		Address:       depositedCoinsAccAddr,
-		Coins:         coins,
-		Sequence:      1,
-		AccountNumber: 1,
-
-		OriginalVesting:  coins,
-		DelegatedFree:    coins,
-		DelegatedVesting: coins,
-		StartTime:        0,
-		EndTime:          0,
-	}
-
-	accountBurned = v034accounts.GenesisAccount{
-		Address:       burnedDepositCoinsAccAddr,
-		Coins:         coins,
-		Sequence:      2,
-		AccountNumber: 2,
-
-		OriginalVesting:  coins,
-		DelegatedFree:    coins,
-		DelegatedVesting: coins,
-		StartTime:        0,
-		EndTime:          0,
-	}
-
-	deposit = v034gov.DepositWithMetadata{
-		ProposalID: 1,
-		Deposit: v034gov.Deposit{
-			ProposalID: 1,
-			Depositor:  addr,
-			Amount:     coins,
-		},
-	}
-)
-
-func TestMigrateEmptyRecord(t *testing.T) {
-
-	type args struct {
-		accounts v034accounts.GenesisState
-		deposits []v034gov.DepositWithMetadata
-	}
-	tests := []struct {
-		name string
-		args args
-	}{
-		{"No Accounts", args{v034accounts.GenesisState{}, []v034gov.DepositWithMetadata{}}},
-		{"Deposited account", args{v034accounts.GenesisState{accountDeposited}, []v034gov.DepositWithMetadata{deposit}}},
-		{"Burned account", args{v034accounts.GenesisState{accountBurned}, []v034gov.DepositWithMetadata{}}},
-		{"Burned and deposited accounts", args{v034accounts.GenesisState{accountDeposited, accountBurned}, []v034gov.DepositWithMetadata{deposit}}},
-	}
-	for _, tt := range tests {
-		tt := tt
-		t.Run(tt.name, func(t *testing.T) {
-			require.NotPanics(t, func() {
-				Migrate(
-					tt.args.accounts,
-					types.Coins{},
-					types.DecCoins{},
-					tt.args.deposits,
-					v034staking.Validators{},
-					[]v034staking.UnbondingDelegation{},
-					[]v034distr.ValidatorOutstandingRewardsRecord{},
-					types.DefaultBondDenom,
-					v034distr.ModuleName,
-					v034gov.ModuleName,
-				)
-			})
-		})
-	}
-}
-
-func TestMigrateWrongDeposit(t *testing.T) {
-	require.Panics(t, func() {
-		Migrate(
-			v034accounts.GenesisState{
-				accountDeposited,
-				accountBurned,
-			},
-			types.Coins{},
-			types.DecCoins{},
-			[]v034gov.DepositWithMetadata{
-				{
-					ProposalID: 1,
-					Deposit: v034gov.Deposit{
-						ProposalID: 1,
-						Depositor:  addr,
-						Amount:     halfCoins,
-					},
-				},
-			},
-			v034staking.Validators{},
-			[]v034staking.UnbondingDelegation{},
-			[]v034distr.ValidatorOutstandingRewardsRecord{},
-			types.DefaultBondDenom,
-			v034distr.ModuleName,
-			v034gov.ModuleName,
-		)
-	})
-}
diff --git a/x/genaccounts/legacy/v036/types.go b/x/genaccounts/legacy/v036/types.go
deleted file mode 100644
index e91db341db..0000000000
--- a/x/genaccounts/legacy/v036/types.go
+++ /dev/null
@@ -1,52 +0,0 @@
-// DONTCOVER
-package v036
-
-import (
-	sdk "github.com/cosmos/cosmos-sdk/types"
-)
-
-const (
-	ModuleName = "accounts"
-)
-
-type (
-	GenesisAccount struct {
-		Address       sdk.AccAddress `json:"address" yaml:"address"`
-		Coins         sdk.Coins      `json:"coins" yaml:"coins"`
-		Sequence      uint64         `json:"sequence_number" yaml:"sequence_number"`
-		AccountNumber uint64         `json:"account_number" yaml:"account_number"`
-
-		OriginalVesting  sdk.Coins `json:"original_vesting" yaml:"original_vesting"`
-		DelegatedFree    sdk.Coins `json:"delegated_free" yaml:"delegated_free"`
-		DelegatedVesting sdk.Coins `json:"delegated_vesting" yaml:"delegated_vesting"`
-		StartTime        int64     `json:"start_time" yaml:"start_time"`
-		EndTime          int64     `json:"end_time" yaml:"end_time"`
-
-		ModuleName        string   `json:"module_name" yaml:"module_name"`
-		ModulePermissions []string `json:"module_permissions" yaml:"module_permissions"`
-	}
-
-	GenesisState []GenesisAccount
-)
-
-// NewGenesisAccount creates a new GenesisAccount object
-func NewGenesisAccount(
-	address sdk.AccAddress, coins sdk.Coins, sequence uint64,
-	vestingAmount, delFree, delVesting sdk.Coins, vestingStartTime, vestingEndTime int64,
-	module string, permissions []string,
-) GenesisAccount {
-
-	return GenesisAccount{
-		Address:           address,
-		Coins:             coins,
-		Sequence:          sequence,
-		AccountNumber:     0, // ignored set by the account keeper during InitGenesis
-		OriginalVesting:   vestingAmount,
-		DelegatedFree:     delFree,
-		DelegatedVesting:  delVesting,
-		StartTime:         vestingStartTime,
-		EndTime:           vestingEndTime,
-		ModuleName:        module,
-		ModulePermissions: permissions,
-	}
-}
diff --git a/x/genutil/client/cli/migrate.go b/x/genutil/client/cli/migrate.go
index 9bba5c3d88..37e42ac4f7 100644
--- a/x/genutil/client/cli/migrate.go
+++ b/x/genutil/client/cli/migrate.go
@@ -14,9 +14,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/client/flags"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/version"
-	v036 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v036"
-	v038 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v038"
-	v039 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v039"
 	v040 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v040"
 	v043 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v043"
 	"github.com/cosmos/cosmos-sdk/x/genutil/types"
@@ -28,9 +25,6 @@ const flagGenesisTime = "genesis-time"
 //
 // Ref: https://github.com/cosmos/cosmos-sdk/issues/5041
 var migrationMap = types.MigrationMap{
-	"v0.36": v036.Migrate,
-	"v0.38": v038.Migrate, // NOTE: v0.37 and v0.38 are genesis compatible.
-	"v0.39": v039.Migrate,
 	"v0.42": v040.Migrate, // NOTE: v0.40, v0.41 and v0.42 are genesis compatible.
 	"v0.43": v043.Migrate,
 }
diff --git a/x/genutil/client/testutil/migrate.go b/x/genutil/client/testutil/migrate.go
index 4645f832b5..e5dd0f2d13 100644
--- a/x/genutil/client/testutil/migrate.go
+++ b/x/genutil/client/testutil/migrate.go
@@ -27,12 +27,6 @@ func (s *IntegrationTestSuite) TestMigrateGenesis() {
 		expErrMsg string
 		check     func(jsonOut string)
 	}{
-		{
-			"migrate 0.34 to 0.36",
-			`{"chain_id":"test","app_state":{}}`,
-			"v0.36",
-			false, "", func(_ string) {},
-		},
 		{
 			"migrate 0.37 to 0.42",
 			v037Exported,
diff --git a/x/genutil/legacy/v036/migrate.go b/x/genutil/legacy/v036/migrate.go
deleted file mode 100644
index 204eebc233..0000000000
--- a/x/genutil/legacy/v036/migrate.go
+++ /dev/null
@@ -1,101 +0,0 @@
-package v036
-
-import (
-	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/codec"
-	cryptocodec "github.com/cosmos/cosmos-sdk/crypto/codec"
-	v034auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v034"
-	v036auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v036"
-	v036bank "github.com/cosmos/cosmos-sdk/x/bank/legacy/v036"
-	v034distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v034"
-	v036distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v036"
-	v034genAccounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v034"
-	v036genAccounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v036"
-	"github.com/cosmos/cosmos-sdk/x/genutil/types"
-	v034gov "github.com/cosmos/cosmos-sdk/x/gov/legacy/v034"
-	v036gov "github.com/cosmos/cosmos-sdk/x/gov/legacy/v036"
-	v036params "github.com/cosmos/cosmos-sdk/x/params/legacy/v036"
-	v034staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v034"
-	v036staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v036"
-)
-
-// Migrate migrates exported state from v0.34 to a v0.36 genesis state.
-func Migrate(appState types.AppMap, _ client.Context) types.AppMap {
-	v034Codec := codec.NewLegacyAmino()
-	cryptocodec.RegisterCrypto(v034Codec)
-	v034gov.RegisterLegacyAminoCodec(v034Codec)
-
-	v036Codec := codec.NewLegacyAmino()
-	cryptocodec.RegisterCrypto(v036Codec)
-	v036gov.RegisterLegacyAminoCodec(v036Codec)
-	v036distr.RegisterLegacyAminoCodec(v036Codec)
-	v036params.RegisterLegacyAminoCodec(v036Codec)
-
-	// migrate genesis accounts state
-	if appState[v034genAccounts.ModuleName] != nil {
-		var genAccs v034genAccounts.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034genAccounts.ModuleName], &genAccs)
-
-		var authGenState v034auth.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034auth.ModuleName], &authGenState)
-
-		var govGenState v034gov.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034gov.ModuleName], &govGenState)
-
-		var distrGenState v034distr.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034distr.ModuleName], &distrGenState)
-
-		var stakingGenState v034staking.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034staking.ModuleName], &stakingGenState)
-
-		delete(appState, v034genAccounts.ModuleName) // delete old key in case the name changed
-		appState[v036genAccounts.ModuleName] = v036Codec.MustMarshalJSON(
-			v036genAccounts.Migrate(
-				genAccs, authGenState.CollectedFees, distrGenState.FeePool.CommunityPool, govGenState.Deposits,
-				stakingGenState.Validators, stakingGenState.UnbondingDelegations, distrGenState.OutstandingRewards,
-				stakingGenState.Params.BondDenom, v036distr.ModuleName, v036gov.ModuleName,
-			),
-		)
-	}
-
-	// migrate auth state
-	if appState[v034auth.ModuleName] != nil {
-		var authGenState v034auth.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034auth.ModuleName], &authGenState)
-
-		delete(appState, v034auth.ModuleName) // delete old key in case the name changed
-		appState[v036auth.ModuleName] = v036Codec.MustMarshalJSON(v036auth.Migrate(authGenState))
-	}
-
-	// migrate gov state
-	if appState[v034gov.ModuleName] != nil {
-		var govGenState v034gov.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034gov.ModuleName], &govGenState)
-
-		delete(appState, v034gov.ModuleName) // delete old key in case the name changed
-		appState[v036gov.ModuleName] = v036Codec.MustMarshalJSON(v036gov.Migrate(govGenState))
-	}
-
-	// migrate distribution state
-	if appState[v034distr.ModuleName] != nil {
-		var slashingGenState v034distr.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034distr.ModuleName], &slashingGenState)
-
-		delete(appState, v034distr.ModuleName) // delete old key in case the name changed
-		appState[v036distr.ModuleName] = v036Codec.MustMarshalJSON(v036distr.Migrate(slashingGenState))
-	}
-
-	// migrate staking state
-	if appState[v034staking.ModuleName] != nil {
-		var stakingGenState v034staking.GenesisState
-		v034Codec.MustUnmarshalJSON(appState[v034staking.ModuleName], &stakingGenState)
-
-		delete(appState, v034staking.ModuleName) // delete old key in case the name changed
-		appState[v036staking.ModuleName] = v036Codec.MustMarshalJSON(v036staking.Migrate(stakingGenState))
-	}
-
-	// migrate supply state
-	appState[v036bank.ModuleName] = v036Codec.MustMarshalJSON(v036bank.EmptyGenesisState())
-
-	return appState
-}
diff --git a/x/genutil/legacy/v036/migrate_test.go b/x/genutil/legacy/v036/migrate_test.go
deleted file mode 100644
index bdd6c4f0ff..0000000000
--- a/x/genutil/legacy/v036/migrate_test.go
+++ /dev/null
@@ -1,107 +0,0 @@
-package v036
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-
-	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/x/genutil/types"
-)
-
-var basic034Gov = []byte(`
-    {
-      "starting_proposal_id": "2",
-      "deposits": [
-        {
-          "proposal_id": "1",
-          "deposit": {
-            "depositor": "cosmos1grgelyng2v6v3t8z87wu3sxgt9m5s03xvslewd",
-            "proposal_id": "1",
-            "amount": [
-              {
-                "denom": "uatom",
-                "amount": "512000000"
-              }
-            ]
-          }
-        }
-      ],
-      "votes" : [
-        {
-          "proposal_id": "1",
-          "vote": {
-            "voter": "cosmos1lktjhnzkpkz3ehrg8psvmwhafg56kfss5597tg",
-            "proposal_id": "1",
-            "option": "Yes"
-          }
-        }
-      ],
-      "proposals": [
-        {
-          "proposal_content": {
-            "type": "gov/TextProposal",
-            "value": {
-              "title": "test",
-              "description": "test"
-            }
-          },
-          "proposal_id": "1",
-          "proposal_status": "Passed",
-          "final_tally_result": {
-            "yes": "1",
-            "abstain": "0",
-            "no": "0",
-            "no_with_veto": "0"
-          },
-          "submit_time": "2019-05-03T21:08:25.443199036Z",
-          "deposit_end_time": "2019-05-17T21:08:25.443199036Z",
-          "total_deposit": [
-            {
-              "denom": "uatom",
-              "amount": "512000000"
-            }
-          ],
-          "voting_start_time": "2019-05-04T16:02:33.24680295Z",
-          "voting_end_time": "2019-05-18T16:02:33.24680295Z"
-        }
-      ],
-      "deposit_params": {
-        "min_deposit": [
-          {
-            "denom": "uatom",
-            "amount": "512000000"
-          }
-        ],
-        "max_deposit_period": "1209600000000000"
-      },
-      "voting_params": {
-        "voting_period": "1209600000000000"
-      },
-      "tally_params": {
-        "quorum": "0.400000000000000000",
-        "threshold": "0.500000000000000000",
-        "veto": "0.334000000000000000"
-      }
-    }
-`)
-
-func TestDummyGenesis(t *testing.T) {
-	genesisDummy := types.AppMap{
-		"foo": {},
-		"bar": []byte(`{"custom": "module"}`),
-	}
-	migratedDummy := Migrate(genesisDummy, client.Context{})
-
-	// We should not touch custom modules in the map
-	require.Equal(t, genesisDummy["foo"], migratedDummy["foo"])
-	require.Equal(t, genesisDummy["bar"], migratedDummy["bar"])
-}
-
-func TestGovGenesis(t *testing.T) {
-	genesis := types.AppMap{
-		"gov": basic034Gov,
-	}
-
-	require.NotPanics(t, func() { Migrate(genesis, client.Context{}) })
-}
diff --git a/x/genutil/legacy/v038/migrate.go b/x/genutil/legacy/v038/migrate.go
deleted file mode 100644
index 017d0e68fa..0000000000
--- a/x/genutil/legacy/v038/migrate.go
+++ /dev/null
@@ -1,70 +0,0 @@
-package v038
-
-import (
-	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/codec"
-	cryptocodec "github.com/cosmos/cosmos-sdk/crypto/codec"
-	v036auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v036"
-	v038auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v038"
-	v036distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v036"
-	v038distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v038"
-	v036genaccounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v036"
-	"github.com/cosmos/cosmos-sdk/x/genutil/types"
-	v036gov "github.com/cosmos/cosmos-sdk/x/gov/legacy/v036"
-	v036params "github.com/cosmos/cosmos-sdk/x/params/legacy/v036"
-	v036staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v036"
-	v038staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v038"
-	v038upgrade "github.com/cosmos/cosmos-sdk/x/upgrade/legacy/v038"
-)
-
-// Migrate migrates exported state from v0.36/v0.37 to a v0.38 genesis state.
-func Migrate(appState types.AppMap, _ client.Context) types.AppMap {
-	v036Codec := codec.NewLegacyAmino()
-	cryptocodec.RegisterCrypto(v036Codec)
-	v036gov.RegisterLegacyAminoCodec(v036Codec)
-	v036distr.RegisterLegacyAminoCodec(v036Codec)
-	v036params.RegisterLegacyAminoCodec(v036Codec)
-
-	v038Codec := codec.NewLegacyAmino()
-	v038auth.RegisterLegacyAminoCodec(v038Codec)
-	v036gov.RegisterLegacyAminoCodec(v038Codec)
-	v036distr.RegisterLegacyAminoCodec(v038Codec)
-	v036params.RegisterLegacyAminoCodec(v038Codec)
-	v038upgrade.RegisterLegacyAminoCodec(v038Codec)
-
-	if appState[v036genaccounts.ModuleName] != nil {
-		// unmarshal relative source genesis application state
-		var authGenState v036auth.GenesisState
-		v036Codec.MustUnmarshalJSON(appState[v036auth.ModuleName], &authGenState)
-
-		var genAccountsGenState v036genaccounts.GenesisState
-		v036Codec.MustUnmarshalJSON(appState[v036genaccounts.ModuleName], &genAccountsGenState)
-
-		// delete deprecated genaccounts genesis state
-		delete(appState, v036genaccounts.ModuleName)
-
-		// Migrate relative source genesis application state and marshal it into
-		// the respective key.
-		appState[v038auth.ModuleName] = v038Codec.MustMarshalJSON(v038auth.Migrate(authGenState, genAccountsGenState))
-	}
-
-	// migrate staking state
-	if appState[v036staking.ModuleName] != nil {
-		var stakingGenState v036staking.GenesisState
-		v036Codec.MustUnmarshalJSON(appState[v036staking.ModuleName], &stakingGenState)
-
-		delete(appState, v036staking.ModuleName) // delete old key in case the name changed
-		appState[v038staking.ModuleName] = v038Codec.MustMarshalJSON(v038staking.Migrate(stakingGenState))
-	}
-
-	// migrate distribution state
-	if appState[v036distr.ModuleName] != nil {
-		var distrGenState v036distr.GenesisState
-		v036Codec.MustUnmarshalJSON(appState[v036distr.ModuleName], &distrGenState)
-
-		delete(appState, v036distr.ModuleName) // delete old key in case the name changed
-		appState[v038distr.ModuleName] = v038Codec.MustMarshalJSON(v038distr.Migrate(distrGenState))
-	}
-
-	return appState
-}
diff --git a/x/genutil/legacy/v038/migrate_test.go b/x/genutil/legacy/v038/migrate_test.go
deleted file mode 100644
index bbc8b476ed..0000000000
--- a/x/genutil/legacy/v038/migrate_test.go
+++ /dev/null
@@ -1,143 +0,0 @@
-package v038_test
-
-import (
-	"testing"
-
-	"github.com/cosmos/cosmos-sdk/client"
-	v036auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v036"
-	v036genaccounts "github.com/cosmos/cosmos-sdk/x/genaccounts/legacy/v036"
-	v038 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v038"
-	"github.com/cosmos/cosmos-sdk/x/genutil/types"
-	v036staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v036"
-
-	"github.com/stretchr/testify/require"
-)
-
-var genAccountsState = []byte(`[
-		{
-			"account_number": "0",
-			"address": "cosmos1q7380u26f7ntke3facjmynajs4umlr329vr4ja",
-			"coins": [
-				{
-					"amount": "1000000000",
-					"denom": "node0token"
-				},
-				{
-					"amount": "400000198",
-					"denom": "stake"
-				}
-			],
-			"delegated_free": [],
-			"delegated_vesting": [],
-			"end_time": "0",
-			"module_name": "",
-			"module_permissions": [],
-			"original_vesting": [],
-			"sequence_number": "1",
-			"start_time": "0"
-		},
-		{
-			"account_number": "0",
-			"address": "cosmos1tygms3xhhs3yv487phx3dw4a95jn7t7lpm470r",
-			"coins": [],
-			"delegated_free": [],
-			"delegated_vesting": [],
-			"end_time": "0",
-			"module_name": "not_bonded_tokens_pool",
-			"module_permissions": [
-				"burner",
-				"staking"
-			],
-			"original_vesting": [],
-			"sequence_number": "0",
-			"start_time": "0"
-		},
-		{
-			"account_number": "0",
-			"address": "cosmos1m3h30wlvsf8llruxtpukdvsy0km2kum8g38c8q",
-			"coins": [],
-			"delegated_free": [],
-			"delegated_vesting": [],
-			"end_time": "0",
-			"module_name": "mint",
-			"module_permissions": [
-				"minter"
-			],
-			"original_vesting": [],
-			"sequence_number": "0",
-			"start_time": "0"
-		}
-	]`)
-
-var genAuthState = []byte(`{
-  "params": {
-    "max_memo_characters": "256",
-    "sig_verify_cost_ed25519": "590",
-    "sig_verify_cost_secp256k1": "1000",
-    "tx_sig_limit": "7",
-    "tx_size_cost_per_byte": "10"
-  }
-}`)
-
-var genStakingState = []byte(`{
-  "delegations": [
-    {
-      "delegator_address": "cosmos1q7380u26f7ntke3facjmynajs4umlr329vr4ja",
-      "shares": "100000000.000000000000000000",
-      "validator_address": "cosmosvaloper1q7380u26f7ntke3facjmynajs4umlr32qchq7w"
-    }
-  ],
-  "exported": true,
-  "last_total_power": "400",
-  "last_validator_powers": [
-    {
-      "Address": "cosmosvaloper1q7380u26f7ntke3facjmynajs4umlr32qchq7w",
-      "Power": "100"
-    }
-  ],
-  "params": {
-    "bond_denom": "stake",
-    "max_entries": 7,
-    "max_validators": 100,
-    "unbonding_time": "259200000000000"
-  },
-  "redelegations": null,
-  "unbonding_delegations": null,
-  "validators": [
-    {
-      "commission": {
-        "commission_rates": {
-          "max_change_rate": "0.000000000000000000",
-          "max_rate": "0.000000000000000000",
-          "rate": "0.000000000000000000"
-        },
-        "update_time": "2019-09-24T23:11:22.9692177Z"
-      },
-      "consensus_pubkey": "cosmosvalconspub1zcjduepqygqrt0saxf76lhsmp56rx52j0acdxyjvcdkq3tqvwrsmmm0ke28q36kh9h",
-      "delegator_shares": "100000000.000000000000000000",
-      "description": {
-        "details": "",
-        "identity": "",
-        "moniker": "node0",
-        "website": ""
-      },
-      "jailed": false,
-      "min_self_delegation": "1",
-      "operator_address": "cosmosvaloper1q7380u26f7ntke3facjmynajs4umlr32qchq7w",
-      "status": 2,
-      "tokens": "100000000",
-      "unbonding_height": "0",
-      "unbonding_time": "1970-01-01T00:00:00Z"
-    }
-  ]
-}`)
-
-func TestMigrate(t *testing.T) {
-	genesis := types.AppMap{
-		v036auth.ModuleName:        genAuthState,
-		v036genaccounts.ModuleName: genAccountsState,
-		v036staking.ModuleName:     genStakingState,
-	}
-
-	require.NotPanics(t, func() { v038.Migrate(genesis, client.Context{}) })
-}
diff --git a/x/genutil/legacy/v039/migrate.go b/x/genutil/legacy/v039/migrate.go
deleted file mode 100644
index 99c7fce772..0000000000
--- a/x/genutil/legacy/v039/migrate.go
+++ /dev/null
@@ -1,44 +0,0 @@
-package v039
-
-import (
-	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/codec"
-	v038auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v038"
-	v039auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v039"
-	v036distr "github.com/cosmos/cosmos-sdk/x/distribution/legacy/v036"
-	"github.com/cosmos/cosmos-sdk/x/genutil/types"
-	v036gov "github.com/cosmos/cosmos-sdk/x/gov/legacy/v036"
-	v036params "github.com/cosmos/cosmos-sdk/x/params/legacy/v036"
-	v038upgrade "github.com/cosmos/cosmos-sdk/x/upgrade/legacy/v038"
-)
-
-// Migrate migrates exported state from v0.38 to a v0.39 genesis state.
-//
-// NOTE: No actual migration occurs since the types do not change, but JSON
-// serialization of accounts do change.
-func Migrate(appState types.AppMap, _ client.Context) types.AppMap {
-	v038Codec := codec.NewLegacyAmino()
-	v038auth.RegisterLegacyAminoCodec(v038Codec)
-	v036gov.RegisterLegacyAminoCodec(v038Codec)
-	v036distr.RegisterLegacyAminoCodec(v038Codec)
-	v036params.RegisterLegacyAminoCodec(v038Codec)
-	v038upgrade.RegisterLegacyAminoCodec(v038Codec)
-
-	v039Codec := codec.NewLegacyAmino()
-	v039auth.RegisterLegacyAminoCodec(v039Codec)
-	v036gov.RegisterLegacyAminoCodec(v039Codec)
-	v036distr.RegisterLegacyAminoCodec(v039Codec)
-	v036params.RegisterLegacyAminoCodec(v039Codec)
-	v038upgrade.RegisterLegacyAminoCodec(v039Codec)
-
-	// migrate x/auth state (JSON serialization only)
-	if appState[v038auth.ModuleName] != nil {
-		var authGenState v038auth.GenesisState
-		v038Codec.MustUnmarshalJSON(appState[v038auth.ModuleName], &authGenState)
-
-		delete(appState, v038auth.ModuleName) // delete old key in case the name changed
-		appState[v039auth.ModuleName] = v039Codec.MustMarshalJSON(v039auth.Migrate(authGenState))
-	}
-
-	return appState
-}
diff --git a/x/genutil/legacy/v039/migrate_test.go b/x/genutil/legacy/v039/migrate_test.go
deleted file mode 100644
index 65a7ec3df7..0000000000
--- a/x/genutil/legacy/v039/migrate_test.go
+++ /dev/null
@@ -1,121 +0,0 @@
-package v039_test
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-
-	"github.com/cosmos/cosmos-sdk/client"
-	v038auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v038"
-	v039auth "github.com/cosmos/cosmos-sdk/x/auth/legacy/v039"
-	v039 "github.com/cosmos/cosmos-sdk/x/genutil/legacy/v039"
-	"github.com/cosmos/cosmos-sdk/x/genutil/types"
-)
-
-var genAuthState = []byte(`{
-  "params": {
-    "max_memo_characters": "10",
-    "tx_sig_limit": "10",
-    "tx_size_cost_per_byte": "10",
-    "sig_verify_cost_ed25519": "10",
-    "sig_verify_cost_secp256k1": "10"
-  },
-  "accounts": [
-    {
-      "type": "cosmos-sdk/Account",
-      "value": {
-        "address": "cosmos19hz3ee9e3lj9mne4jggj3v8hxjrpre22jukj9y",
-        "coins": [
-          {
-            "denom": "stake",
-            "amount": "400000"
-          }
-        ],
-        "public_key": "cosmospub1addwnpepqtezq4ajkevh724ls45zp72x70rj8mhszqf5pxcaahazm8trv490swlf404",
-        "account_number": 1,
-        "sequence": 1
-      }
-    },
-    {
-      "type": "cosmos-sdk/ModuleAccount",
-      "value": {
-        "address": "cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh",
-        "coins": [
-          {
-            "denom": "stake",
-            "amount": "400000000"
-          }
-        ],
-        "public_key": "",
-        "account_number": 2,
-        "sequence": 4,
-        "name": "bonded_tokens_pool",
-        "permissions": [
-          "burner",
-          "staking"
-        ]
-      }
-    },
-    {
-      "type": "cosmos-sdk/ContinuousVestingAccount",
-      "value": {
-        "address": "cosmos1vtzxzyjv506dvhl9pa527xsugf5gez4fnqxq0n",
-        "coins": [
-          {
-            "denom": "stake",
-            "amount": "10000205"
-          }
-        ],
-        "public_key": "cosmospub1addwnpepqdxrk48q89xlmnzrr5nkssle05tkp73uknevzaavm53c02v26vlyzz6vcdh",
-        "account_number": 3,
-        "sequence": 5,
-        "original_vesting": [
-          {
-            "denom": "stake",
-            "amount": "10000205"
-          }
-        ],
-        "delegated_free": [],
-        "delegated_vesting": [],
-        "end_time": 1596125048,
-        "start_time": 1595952248
-      }
-    },
-    {
-      "type": "cosmos-sdk/DelayedVestingAccount",
-      "value": {
-        "address": "cosmos1prxkcqclweqa0g28p7vmf6z78ghyeckm4qak30",
-        "coins": [
-          {
-            "denom": "stake",
-            "amount": "10000205"
-          }
-        ],
-        "public_key": "cosmospub1addwnpepqwewcad349e2yw3weatf8lzfyv5cd6am9jkk4ajach3f568k6gg47nls3p8",
-        "account_number": 4,
-        "sequence": 15,
-        "original_vesting": [
-          {
-            "denom": "stake",
-            "amount": "10000205"
-          }
-        ],
-        "delegated_free": [],
-        "delegated_vesting": [],
-        "end_time": 1596125048
-      }
-    }
-  ]
-}`)
-
-var expectedGenAuthState = []byte(`{"params":{"max_memo_characters":"10","tx_sig_limit":"10","tx_size_cost_per_byte":"10","sig_verify_cost_ed25519":"10","sig_verify_cost_secp256k1":"10"},"accounts":[{"type":"cosmos-sdk/Account","value":{"address":"cosmos19hz3ee9e3lj9mne4jggj3v8hxjrpre22jukj9y","coins":[{"denom":"stake","amount":"400000"}],"public_key":{"type":"tendermint/PubKeySecp256k1","value":"AvIgV7K2WX8qv4VoIPlG88cj7vAQE0CbHe36LZ1jZUr4"},"account_number":"1","sequence":"1"}},{"type":"cosmos-sdk/ModuleAccount","value":{"address":"cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh","coins":[{"denom":"stake","amount":"400000000"}],"public_key":"","account_number":"2","sequence":"4","name":"bonded_tokens_pool","permissions":["burner","staking"]}},{"type":"cosmos-sdk/ContinuousVestingAccount","value":{"address":"cosmos1vtzxzyjv506dvhl9pa527xsugf5gez4fnqxq0n","coins":[{"denom":"stake","amount":"10000205"}],"public_key":{"type":"tendermint/PubKeySecp256k1","value":"A0w7VOA5Tf3MQx0naEP5fRdg+jy08sF3rN0jh6mK0z5B"},"account_number":"3","sequence":"5","original_vesting":[{"denom":"stake","amount":"10000205"}],"delegated_free":[],"delegated_vesting":[],"end_time":"1596125048","start_time":"1595952248"}},{"type":"cosmos-sdk/DelayedVestingAccount","value":{"address":"cosmos1prxkcqclweqa0g28p7vmf6z78ghyeckm4qak30","coins":[{"denom":"stake","amount":"10000205"}],"public_key":{"type":"tendermint/PubKeySecp256k1","value":"A7LsdbGpcqI6Ls9Wk/xJIymG67ssrWr2XcXimmj20hFf"},"account_number":"4","sequence":"15","original_vesting":[{"denom":"stake","amount":"10000205"}],"delegated_free":[],"delegated_vesting":[],"end_time":"1596125048"}}]}`)
-
-func TestMigrate(t *testing.T) {
-	genesis := types.AppMap{
-		v038auth.ModuleName: genAuthState,
-	}
-
-	var migrated types.AppMap
-	require.NotPanics(t, func() { migrated = v039.Migrate(genesis, client.Context{}) })
-	require.Equal(t, string(expectedGenAuthState), string(migrated[v039auth.ModuleName]))
-}
diff --git a/x/gov/legacy/v034/types.go b/x/gov/legacy/v034/types.go
index 14e0b7a265..83955badd7 100644
--- a/x/gov/legacy/v034/types.go
+++ b/x/gov/legacy/v034/types.go
@@ -1,3 +1,6 @@
+// Package v034 is used for legacy migration scripts. Actual migration scripts
+// for v034 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v034
 
diff --git a/x/gov/legacy/v036/migrate.go b/x/gov/legacy/v036/migrate.go
deleted file mode 100644
index d20df1d9c7..0000000000
--- a/x/gov/legacy/v036/migrate.go
+++ /dev/null
@@ -1,49 +0,0 @@
-package v036
-
-import (
-	v034gov "github.com/cosmos/cosmos-sdk/x/gov/legacy/v034"
-)
-
-// Migrate accepts exported genesis state from v0.34 and migrates it to v0.36
-// genesis state. This migration flattens the deposits and votes and updates the
-// proposal content to the new
-func Migrate(oldGenState v034gov.GenesisState) GenesisState {
-	deposits := make(v034gov.Deposits, len(oldGenState.Deposits))
-	for i, deposit := range oldGenState.Deposits {
-		deposits[i] = deposit.Deposit
-	}
-
-	votes := make(v034gov.Votes, len(oldGenState.Votes))
-	for i, vote := range oldGenState.Votes {
-		votes[i] = vote.Vote
-	}
-
-	proposals := make([]Proposal, len(oldGenState.Proposals))
-	for i, proposal := range oldGenState.Proposals {
-		proposals[i] = Proposal{
-			Content:          migrateContent(proposal.ProposalContent),
-			ProposalID:       proposal.ProposalID,
-			Status:           proposal.Status,
-			FinalTallyResult: proposal.FinalTallyResult,
-			SubmitTime:       proposal.SubmitTime,
-			DepositEndTime:   proposal.DepositEndTime,
-			TotalDeposit:     proposal.TotalDeposit,
-			VotingStartTime:  proposal.VotingStartTime,
-			VotingEndTime:    proposal.VotingEndTime,
-		}
-	}
-
-	return NewGenesisState(
-		oldGenState.StartingProposalID, deposits, votes, proposals,
-		oldGenState.DepositParams, oldGenState.VotingParams, oldGenState.TallyParams,
-	)
-}
-
-func migrateContent(proposalContent v034gov.ProposalContent) (content Content) {
-	switch proposalContent.ProposalType() {
-	case v034gov.ProposalTypeText:
-		return NewTextProposal(proposalContent.GetTitle(), proposalContent.GetDescription())
-	default:
-		return nil
-	}
-}
diff --git a/x/gov/legacy/v036/types.go b/x/gov/legacy/v036/types.go
index 6632c6da25..28b42657a0 100644
--- a/x/gov/legacy/v036/types.go
+++ b/x/gov/legacy/v036/types.go
@@ -1,3 +1,6 @@
+// Package v036 is used for legacy migration scripts. Actual migration scripts
+// for v036 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v036
 
diff --git a/x/params/legacy/v036/types.go b/x/params/legacy/v036/types.go
index 66cc9e7d8a..b71f1ffab8 100644
--- a/x/params/legacy/v036/types.go
+++ b/x/params/legacy/v036/types.go
@@ -1,3 +1,6 @@
+// Package v036 is used for legacy migration scripts. Actual migration scripts
+// for v036 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 package v036
 
 import (
diff --git a/x/staking/legacy/v034/types.go b/x/staking/legacy/v034/types.go
index a69f4cc9b9..868a6901f8 100644
--- a/x/staking/legacy/v034/types.go
+++ b/x/staking/legacy/v034/types.go
@@ -1,3 +1,6 @@
+// Package v034 is used for legacy migration scripts. Actual migration scripts
+// for v034 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v034
 
diff --git a/x/staking/legacy/v036/migrate.go b/x/staking/legacy/v036/migrate.go
deleted file mode 100644
index bb1f78bc40..0000000000
--- a/x/staking/legacy/v036/migrate.go
+++ /dev/null
@@ -1,51 +0,0 @@
-// DONTCOVER
-package v036
-
-import (
-	v034staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v034"
-)
-
-// Migrate accepts exported genesis state from v0.34 and migrates it to v0.36
-// genesis state. All entries are identical except for validator slashing events
-// which now include the period.
-func Migrate(oldGenState v034staking.GenesisState) GenesisState {
-	return NewGenesisState(
-		oldGenState.Params,
-		oldGenState.LastTotalPower,
-		oldGenState.LastValidatorPowers,
-		migrateValidators(oldGenState.Validators),
-		oldGenState.Delegations,
-		oldGenState.UnbondingDelegations,
-		oldGenState.Redelegations,
-		oldGenState.Exported,
-	)
-}
-
-func migrateValidators(oldValidators v034staking.Validators) Validators {
-	validators := make(Validators, len(oldValidators))
-
-	for i, val := range oldValidators {
-		validators[i] = Validator{
-			OperatorAddress:         val.OperatorAddress,
-			ConsPubKey:              val.ConsPubKey,
-			Jailed:                  val.Jailed,
-			Status:                  val.Status,
-			Tokens:                  val.Tokens,
-			DelegatorShares:         val.DelegatorShares,
-			Description:             val.Description,
-			UnbondingHeight:         val.UnbondingHeight,
-			UnbondingCompletionTime: val.UnbondingCompletionTime,
-			Commission: Commission{
-				CommissionRates: CommissionRates{
-					Rate:          val.Commission.Rate,
-					MaxRate:       val.Commission.MaxRate,
-					MaxChangeRate: val.Commission.MaxChangeRate,
-				},
-				UpdateTime: val.Commission.UpdateTime,
-			},
-			MinSelfDelegation: val.MinSelfDelegation,
-		}
-	}
-
-	return validators
-}
diff --git a/x/staking/legacy/v036/migrate_test.go b/x/staking/legacy/v036/migrate_test.go
deleted file mode 100644
index 3754042785..0000000000
--- a/x/staking/legacy/v036/migrate_test.go
+++ /dev/null
@@ -1,104 +0,0 @@
-package v036_test
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-
-	"github.com/cosmos/cosmos-sdk/codec"
-	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
-	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
-	v034staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v034"
-	v036staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v036"
-)
-
-func TestMigrate(t *testing.T) {
-	aminoCdc := codec.NewLegacyAmino()
-	consPubKeyEd := ed25519.GenPrivKeyFromSecret([]byte("val0")).PubKey()
-	consPubKeySecp := secp256k1.GenPrivKeyFromSecret([]byte("val1")).PubKey()
-	stakingGenState := v034staking.GenesisState{
-		Validators: v034staking.Validators{
-			v034staking.Validator{
-				ConsPubKey: consPubKeyEd,
-				Status:     v034staking.Unbonded,
-			}, v034staking.Validator{
-				ConsPubKey: consPubKeySecp,
-				Status:     v034staking.Unbonded,
-			},
-		},
-	}
-
-	migrated := v036staking.Migrate(stakingGenState)
-
-	json, err := aminoCdc.MarshalJSONIndent(migrated, "", "  ")
-	require.NoError(t, err)
-
-	expectedJSON := `{
-  "params": {
-    "unbonding_time": "0",
-    "max_validators": 0,
-    "max_entries": 0,
-    "bond_denom": ""
-  },
-  "last_total_power": "0",
-  "last_validator_powers": null,
-  "validators": [
-    {
-      "operator_address": "",
-      "consensus_pubkey": "cosmosvalconspub1zcjduepq9ymett3nlv6fytn7lqxzd3q3ckvd79eqlcf3wkhgamcl4rzghesq83ecpx",
-      "jailed": false,
-      "status": 0,
-      "tokens": "0",
-      "delegator_shares": "0",
-      "description": {
-        "moniker": "",
-        "identity": "",
-        "website": "",
-        "details": ""
-      },
-      "unbonding_height": "0",
-      "unbonding_time": "0001-01-01T00:00:00Z",
-      "commission": {
-        "commission_rates": {
-          "rate": "0",
-          "max_rate": "0",
-          "max_change_rate": "0"
-        },
-        "update_time": "0001-01-01T00:00:00Z"
-      },
-      "min_self_delegation": "0"
-    },
-    {
-      "operator_address": "",
-      "consensus_pubkey": "cosmosvalconspub1addwnpepqwfxk5k5pugwz3quqyzvzupefm3589tw6x9dkzjdkuzn7hgpz33ag84e406",
-      "jailed": false,
-      "status": 0,
-      "tokens": "0",
-      "delegator_shares": "0",
-      "description": {
-        "moniker": "",
-        "identity": "",
-        "website": "",
-        "details": ""
-      },
-      "unbonding_height": "0",
-      "unbonding_time": "0001-01-01T00:00:00Z",
-      "commission": {
-        "commission_rates": {
-          "rate": "0",
-          "max_rate": "0",
-          "max_change_rate": "0"
-        },
-        "update_time": "0001-01-01T00:00:00Z"
-      },
-      "min_self_delegation": "0"
-    }
-  ],
-  "delegations": null,
-  "unbonding_delegations": null,
-  "redelegations": null,
-  "exported": false
-}`
-
-	require.Equal(t, expectedJSON, string(json))
-}
diff --git a/x/staking/legacy/v036/types.go b/x/staking/legacy/v036/types.go
index 5e73da2439..7cc0821668 100644
--- a/x/staking/legacy/v036/types.go
+++ b/x/staking/legacy/v036/types.go
@@ -1,3 +1,6 @@
+// Package v036 is used for legacy migration scripts. Actual migration scripts
+// for v036 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v036
 
diff --git a/x/staking/legacy/v038/migrate.go b/x/staking/legacy/v038/migrate.go
deleted file mode 100644
index d2f65edadf..0000000000
--- a/x/staking/legacy/v038/migrate.go
+++ /dev/null
@@ -1,50 +0,0 @@
-// DONTCOVER
-package v038
-
-import (
-	v036staking "github.com/cosmos/cosmos-sdk/x/staking/legacy/v036"
-)
-
-// Migrate accepts exported genesis state from v0.36 or v0.37 and migrates it to
-// v0.38 genesis state. All entries are identical except for validator descriptions
-// which now include a security contact.
-func Migrate(oldGenState v036staking.GenesisState) GenesisState {
-	return NewGenesisState(
-		oldGenState.Params,
-		oldGenState.LastTotalPower,
-		oldGenState.LastValidatorPowers,
-		migrateValidators(oldGenState.Validators),
-		oldGenState.Delegations,
-		oldGenState.UnbondingDelegations,
-		oldGenState.Redelegations,
-		oldGenState.Exported,
-	)
-}
-
-func migrateValidators(oldValidators v036staking.Validators) Validators {
-	validators := make(Validators, len(oldValidators))
-
-	for i, val := range oldValidators {
-		validators[i] = Validator{
-			OperatorAddress: val.OperatorAddress,
-			ConsPubKey:      val.ConsPubKey,
-			Jailed:          val.Jailed,
-			Status:          val.Status,
-			Tokens:          val.Tokens,
-			DelegatorShares: val.DelegatorShares,
-			Description: NewDescription(
-				val.Description.Moniker,
-				val.Description.Identity,
-				val.Description.Website,
-				"", // security contact field
-				val.Description.Details,
-			),
-			UnbondingHeight:         val.UnbondingHeight,
-			UnbondingCompletionTime: val.UnbondingCompletionTime,
-			Commission:              val.Commission,
-			MinSelfDelegation:       val.MinSelfDelegation,
-		}
-	}
-
-	return validators
-}
diff --git a/x/staking/legacy/v038/types.go b/x/staking/legacy/v038/types.go
index f8e08acbdf..c0eb7946b1 100644
--- a/x/staking/legacy/v038/types.go
+++ b/x/staking/legacy/v038/types.go
@@ -1,3 +1,6 @@
+// Package v038 is used for legacy migration scripts. Actual migration scripts
+// for v038 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 // DONTCOVER
 package v038
 
diff --git a/x/upgrade/legacy/v038/types.go b/x/upgrade/legacy/v038/types.go
index db833477bf..da7b3ae93d 100644
--- a/x/upgrade/legacy/v038/types.go
+++ b/x/upgrade/legacy/v038/types.go
@@ -1,3 +1,6 @@
+// Package v038 is used for legacy migration scripts. Actual migration scripts
+// for v038 have been removed, but the v039->v042 migration script still
+// references types from this file, so we're keeping it for now.
 package v038
 
 import (