diff --git a/packages/sdk38/src/index.ts b/packages/sdk38/src/index.ts
index 4233a729..d9dd90ce 100644
--- a/packages/sdk38/src/index.ts
+++ b/packages/sdk38/src/index.ts
@@ -28,6 +28,16 @@ export {
   BlockResponse,
   BroadcastMode,
   EncodeTxResponse,
+  GovExtension,
+  GovParametersResponse,
+  GovProposalsResponse,
+  GovProposalResponse,
+  GovProposerResponse,
+  GovDepositsResponse,
+  GovDepositResponse,
+  GovTallyResponse,
+  GovVotesResponse,
+  GovVoteResponse,
   LcdApiArray,
   LcdClient,
   MintAnnualProvisionsResponse,
@@ -40,6 +50,7 @@ export {
   SearchTxsResponse,
   setupAuthExtension,
   setupBankExtension,
+  setupGovExtension,
   setupMintExtension,
   setupSlashingExtension,
   setupSupplyExtension,
diff --git a/packages/sdk38/src/lcdapi/gov.spec.ts b/packages/sdk38/src/lcdapi/gov.spec.ts
new file mode 100644
index 00000000..594be5d5
--- /dev/null
+++ b/packages/sdk38/src/lcdapi/gov.spec.ts
@@ -0,0 +1,304 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+import { assert, sleep } from "@cosmjs/utils";
+
+import { coins } from "../coins";
+import { isPostTxFailure } from "../cosmosclient";
+import { makeSignBytes } from "../encoding";
+import { SigningCosmosClient } from "../signingcosmosclient";
+import {
+  dateTimeStampMatcher,
+  faucet,
+  nonNegativeIntegerMatcher,
+  pendingWithoutWasmd,
+  wasmd,
+  wasmdEnabled,
+} from "../testutils.spec";
+import { Secp256k1Wallet } from "../wallet";
+import { GovExtension, GovParametersType, setupGovExtension } from "./gov";
+import { LcdClient } from "./lcdclient";
+
+function makeGovClient(apiUrl: string): LcdClient & GovExtension {
+  return LcdClient.withExtensions({ apiUrl }, setupGovExtension);
+}
+
+describe("GovExtension", () => {
+  const defaultFee = {
+    amount: coins(25000, "ucosm"),
+    gas: "1500000", // 1.5 million
+  };
+  let proposalId: string;
+
+  beforeAll(async () => {
+    if (wasmdEnabled()) {
+      const wallet = await Secp256k1Wallet.fromMnemonic(faucet.mnemonic);
+      const client = new SigningCosmosClient(wasmd.endpoint, faucet.address, wallet, {});
+
+      const chainId = await client.getChainId();
+      const proposalMsg = {
+        type: "cosmos-sdk/MsgSubmitProposal",
+        value: {
+          content: {
+            type: "cosmos-sdk/TextProposal",
+            value: {
+              description: "This proposal proposes to test whether this proposal passes",
+              title: "Test Proposal",
+            },
+          },
+          proposer: faucet.address,
+          initial_deposit: coins(25000000, "ustake"),
+        },
+      };
+      const proposalMemo = "Test proposal for wasmd";
+      const { accountNumber: proposalAccountNumber, sequence: proposalSequence } = await client.getNonce();
+      const proposalSignBytes = makeSignBytes(
+        [proposalMsg],
+        defaultFee,
+        chainId,
+        proposalMemo,
+        proposalAccountNumber,
+        proposalSequence,
+      );
+      const proposalSignature = await wallet.sign(faucet.address, proposalSignBytes);
+      const proposalTx = {
+        msg: [proposalMsg],
+        fee: defaultFee,
+        memo: proposalMemo,
+        signatures: [proposalSignature],
+      };
+
+      const proposalReceipt = await client.postTx(proposalTx);
+      assert(!isPostTxFailure(proposalReceipt));
+      proposalId = proposalReceipt.logs[0].events
+        .find(({ type }) => type === "submit_proposal")!
+        .attributes.find(({ key }) => key === "proposal_id")!.value;
+
+      const voteMsg = {
+        type: "cosmos-sdk/MsgVote",
+        value: {
+          proposal_id: proposalId,
+          voter: faucet.address,
+          option: "Yes",
+        },
+      };
+      const voteMemo = "Test vote for wasmd";
+      const { accountNumber: voteAccountNumber, sequence: voteSequence } = await client.getNonce();
+      const voteSignBytes = makeSignBytes(
+        [voteMsg],
+        defaultFee,
+        chainId,
+        voteMemo,
+        voteAccountNumber,
+        voteSequence,
+      );
+      const voteSignature = await wallet.sign(faucet.address, voteSignBytes);
+      const voteTx = {
+        msg: [voteMsg],
+        fee: defaultFee,
+        memo: voteMemo,
+        signatures: [voteSignature],
+      };
+      await client.postTx(voteTx);
+
+      await sleep(75); // wait until transactions are indexed
+    }
+  });
+
+  describe("parameters", () => {
+    it("works for deposit", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const paramsType = GovParametersType.Deposit;
+      const response = await client.gov.parameters(paramsType);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          min_deposit: [{ denom: "ustake", amount: "10000000" }],
+          max_deposit_period: "172800000000000",
+        },
+      });
+    });
+
+    it("works for tallying", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const paramsType = GovParametersType.Tallying;
+      const response = await client.gov.parameters(paramsType);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          quorum: "0.334000000000000000",
+          threshold: "0.500000000000000000",
+          veto: "0.334000000000000000",
+        },
+      });
+    });
+
+    it("works for voting", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const paramsType = GovParametersType.Voting;
+      const response = await client.gov.parameters(paramsType);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          voting_period: "172800000000000",
+        },
+      });
+    });
+  });
+
+  describe("proposals", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.proposals();
+      expect(response.height).toMatch(nonNegativeIntegerMatcher);
+      expect(response.result.length).toBeGreaterThanOrEqual(1);
+      expect(response.result[response.result.length - 1]).toEqual({
+        content: {
+          type: "cosmos-sdk/TextProposal",
+          value: {
+            title: "Test Proposal",
+            description: "This proposal proposes to test whether this proposal passes",
+          },
+        },
+        id: proposalId,
+        proposal_status: "VotingPeriod",
+        final_tally_result: { yes: "0", abstain: "0", no: "0", no_with_veto: "0" },
+        submit_time: jasmine.stringMatching(dateTimeStampMatcher),
+        deposit_end_time: jasmine.stringMatching(dateTimeStampMatcher),
+        total_deposit: [{ denom: "ustake", amount: "25000000" }],
+        voting_start_time: jasmine.stringMatching(dateTimeStampMatcher),
+        voting_end_time: jasmine.stringMatching(dateTimeStampMatcher),
+      });
+    });
+  });
+
+  describe("proposal", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.proposal(proposalId);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          content: {
+            type: "cosmos-sdk/TextProposal",
+            value: {
+              title: "Test Proposal",
+              description: "This proposal proposes to test whether this proposal passes",
+            },
+          },
+          id: proposalId,
+          proposal_status: "VotingPeriod",
+          final_tally_result: { yes: "0", abstain: "0", no: "0", no_with_veto: "0" },
+          submit_time: jasmine.stringMatching(dateTimeStampMatcher),
+          deposit_end_time: jasmine.stringMatching(dateTimeStampMatcher),
+          total_deposit: [{ denom: "ustake", amount: "25000000" }],
+          voting_start_time: jasmine.stringMatching(dateTimeStampMatcher),
+          voting_end_time: jasmine.stringMatching(dateTimeStampMatcher),
+        },
+      });
+    });
+  });
+
+  describe("proposer", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.proposer(proposalId);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          proposal_id: proposalId,
+          proposer: faucet.address,
+        },
+      });
+    });
+  });
+
+  describe("deposits", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.deposits(proposalId);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: [
+          {
+            proposal_id: proposalId,
+            depositor: faucet.address,
+            amount: [{ denom: "ustake", amount: "25000000" }],
+          },
+        ],
+      });
+    });
+  });
+
+  describe("deposit", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.deposit(proposalId, faucet.address);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          proposal_id: proposalId,
+          depositor: faucet.address,
+          amount: [{ denom: "ustake", amount: "25000000" }],
+        },
+      });
+    });
+  });
+
+  describe("tally", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.tally(proposalId);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          yes: "0",
+          abstain: "0",
+          no: "0",
+          no_with_veto: "0",
+        },
+      });
+    });
+  });
+
+  describe("votes", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.votes(proposalId);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: [
+          {
+            proposal_id: proposalId,
+            voter: faucet.address,
+            option: "Yes",
+          },
+        ],
+      });
+    });
+  });
+
+  describe("vote", () => {
+    it("works", async () => {
+      pendingWithoutWasmd();
+      const client = makeGovClient(wasmd.endpoint);
+      const response = await client.gov.vote(proposalId, faucet.address);
+      expect(response).toEqual({
+        height: jasmine.stringMatching(nonNegativeIntegerMatcher),
+        result: {
+          voter: faucet.address,
+          proposal_id: proposalId,
+          option: "Yes",
+        },
+      });
+    });
+  });
+});
diff --git a/packages/sdk38/src/lcdapi/gov.ts b/packages/sdk38/src/lcdapi/gov.ts
new file mode 100644
index 00000000..f7b46635
--- /dev/null
+++ b/packages/sdk38/src/lcdapi/gov.ts
@@ -0,0 +1,150 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+import { Coin } from "../coins";
+import { LcdClient } from "./lcdclient";
+
+export enum GovParametersType {
+  Deposit = "deposit",
+  Tallying = "tallying",
+  Voting = "voting",
+}
+
+export interface GovParametersDepositResponse {
+  readonly height: string;
+  readonly result: {
+    readonly min_deposit: readonly Coin[];
+    readonly max_deposit_period: string;
+  };
+}
+
+export interface GovParametersTallyingResponse {
+  readonly height: string;
+  readonly result: {
+    readonly quorum: string;
+    readonly threshold: string;
+    readonly veto: string;
+  };
+}
+
+export interface GovParametersVotingResponse {
+  readonly height: string;
+  readonly result: {
+    readonly voting_period: string;
+  };
+}
+
+export type GovParametersResponse =
+  | GovParametersDepositResponse
+  | GovParametersTallyingResponse
+  | GovParametersVotingResponse;
+
+export interface Tally {
+  readonly yes: string;
+  readonly abstain: string;
+  readonly no: string;
+  readonly no_with_veto: string;
+}
+
+export interface Proposal {
+  readonly id: string;
+  readonly proposal_status: string;
+  readonly final_tally_result: Tally;
+  readonly submit_time: string;
+  readonly total_deposit: readonly Coin[];
+  readonly deposit_end_time: string;
+  readonly voting_start_time: string;
+  readonly voting_end_time: string;
+  readonly content: {
+    readonly type: string;
+    readonly value: {
+      readonly title: string;
+      readonly description: string;
+    };
+  };
+}
+
+export interface GovProposalsResponse {
+  readonly height: string;
+  readonly result: readonly Proposal[];
+}
+
+export interface GovProposalResponse {
+  readonly height: string;
+  readonly result: Proposal;
+}
+
+export interface GovProposerResponse {
+  readonly height: string;
+  readonly result: {
+    readonly proposal_id: string;
+    readonly proposer: string;
+  };
+}
+
+export interface Deposit {
+  readonly amount: readonly Coin[];
+  readonly proposal_id: string;
+  readonly depositor: string;
+}
+
+export interface GovDepositsResponse {
+  readonly height: string;
+  readonly result: readonly Deposit[];
+}
+
+export interface GovDepositResponse {
+  readonly height: string;
+  readonly result: Deposit;
+}
+
+export interface GovTallyResponse {
+  readonly height: string;
+  readonly result: Tally;
+}
+
+export interface Vote {
+  readonly voter: string;
+  readonly proposal_id: string;
+  readonly option: string;
+}
+
+export interface GovVotesResponse {
+  readonly height: string;
+  readonly result: readonly Vote[];
+}
+
+export interface GovVoteResponse {
+  readonly height: string;
+  readonly result: Vote;
+}
+
+export interface GovExtension {
+  readonly gov: {
+    readonly parameters: (parametersType: GovParametersType) => Promise<GovParametersResponse>;
+    readonly proposals: () => Promise<GovProposalsResponse>;
+    readonly proposal: (proposalId: string) => Promise<GovProposalResponse>;
+    readonly proposer: (proposalId: string) => Promise<GovProposerResponse>;
+    readonly deposits: (proposalId: string) => Promise<GovDepositsResponse>;
+    readonly deposit: (proposalId: string, depositorAddress: string) => Promise<GovDepositResponse>;
+    readonly tally: (proposalId: string) => Promise<GovTallyResponse>;
+    readonly votes: (proposalId: string) => Promise<GovVotesResponse>;
+    readonly vote: (proposalId: string, voterAddress: string) => Promise<GovVoteResponse>;
+  };
+}
+
+export function setupGovExtension(base: LcdClient): GovExtension {
+  return {
+    gov: {
+      parameters: async (parametersType: GovParametersType) => base.get(`/gov/parameters/${parametersType}`),
+      proposals: async () => base.get("/gov/proposals"),
+      proposal: async (proposalId: string) => base.get(`/gov/proposals/${proposalId}`),
+      proposer: async (proposalId: string) => base.get(`/gov/proposals/${proposalId}/proposer`),
+      deposits: async (proposalId: string) => base.get(`/gov/proposals/${proposalId}/deposits`),
+      deposit: async (proposalId: string, depositorAddress: string) =>
+        base.get(`/gov/proposals/${proposalId}/deposits/${depositorAddress}`),
+      tally: async (proposalId: string) => base.get(`/gov/proposals/${proposalId}/tally`),
+      votes: async (proposalId: string) => base.get(`/gov/proposals/${proposalId}/votes`),
+      vote: async (proposalId: string, voterAddress: string) =>
+        base.get(`/gov/proposals/${proposalId}/votes/${voterAddress}`),
+    },
+  };
+}
diff --git a/packages/sdk38/src/lcdapi/index.ts b/packages/sdk38/src/lcdapi/index.ts
index 11ef100e..80bd53b7 100644
--- a/packages/sdk38/src/lcdapi/index.ts
+++ b/packages/sdk38/src/lcdapi/index.ts
@@ -4,6 +4,19 @@
 
 export { AuthExtension, AuthAccountsResponse, setupAuthExtension } from "./auth";
 export { BankBalancesResponse, BankExtension, setupBankExtension } from "./bank";
+export {
+  GovExtension,
+  GovParametersResponse,
+  GovProposalsResponse,
+  GovProposalResponse,
+  GovProposerResponse,
+  GovDepositsResponse,
+  GovDepositResponse,
+  GovTallyResponse,
+  GovVotesResponse,
+  GovVoteResponse,
+  setupGovExtension,
+} from "./gov";
 export {
   MintAnnualProvisionsResponse,
   MintExtension,
diff --git a/packages/sdk38/src/testutils.spec.ts b/packages/sdk38/src/testutils.spec.ts
index 005fdc26..b6c80a73 100644
--- a/packages/sdk38/src/testutils.spec.ts
+++ b/packages/sdk38/src/testutils.spec.ts
@@ -17,6 +17,7 @@ export const tendermintIdMatcher = /^[0-9A-F]{64}$/;
 export const tendermintOptionalIdMatcher = /^([0-9A-F]{64}|)$/;
 export const tendermintAddressMatcher = /^[0-9A-F]{40}$/;
 export const tendermintShortHashMatcher = /^[0-9a-f]{40}$/;
+export const dateTimeStampMatcher = /^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}(?:\.[0-9]+)?Z$/;
 export const semverMatcher = /^[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$/;
 
 // https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki#bech32
diff --git a/packages/sdk38/types/index.d.ts b/packages/sdk38/types/index.d.ts
index 4fd2a02e..4f22dbbc 100644
--- a/packages/sdk38/types/index.d.ts
+++ b/packages/sdk38/types/index.d.ts
@@ -26,6 +26,16 @@ export {
   BlockResponse,
   BroadcastMode,
   EncodeTxResponse,
+  GovExtension,
+  GovParametersResponse,
+  GovProposalsResponse,
+  GovProposalResponse,
+  GovProposerResponse,
+  GovDepositsResponse,
+  GovDepositResponse,
+  GovTallyResponse,
+  GovVotesResponse,
+  GovVoteResponse,
   LcdApiArray,
   LcdClient,
   MintAnnualProvisionsResponse,
@@ -38,6 +48,7 @@ export {
   SearchTxsResponse,
   setupAuthExtension,
   setupBankExtension,
+  setupGovExtension,
   setupMintExtension,
   setupSlashingExtension,
   setupSupplyExtension,
diff --git a/packages/sdk38/types/lcdapi/gov.d.ts b/packages/sdk38/types/lcdapi/gov.d.ts
new file mode 100644
index 00000000..b7f3f8fd
--- /dev/null
+++ b/packages/sdk38/types/lcdapi/gov.d.ts
@@ -0,0 +1,114 @@
+import { Coin } from "../coins";
+import { LcdClient } from "./lcdclient";
+export declare enum GovParametersType {
+  Deposit = "deposit",
+  Tallying = "tallying",
+  Voting = "voting",
+}
+export interface GovParametersDepositResponse {
+  readonly height: string;
+  readonly result: {
+    readonly min_deposit: readonly Coin[];
+    readonly max_deposit_period: string;
+  };
+}
+export interface GovParametersTallyingResponse {
+  readonly height: string;
+  readonly result: {
+    readonly quorum: string;
+    readonly threshold: string;
+    readonly veto: string;
+  };
+}
+export interface GovParametersVotingResponse {
+  readonly height: string;
+  readonly result: {
+    readonly voting_period: string;
+  };
+}
+export declare type GovParametersResponse =
+  | GovParametersDepositResponse
+  | GovParametersTallyingResponse
+  | GovParametersVotingResponse;
+export interface Tally {
+  readonly yes: string;
+  readonly abstain: string;
+  readonly no: string;
+  readonly no_with_veto: string;
+}
+export interface Proposal {
+  readonly id: string;
+  readonly proposal_status: string;
+  readonly final_tally_result: Tally;
+  readonly submit_time: string;
+  readonly total_deposit: readonly Coin[];
+  readonly deposit_end_time: string;
+  readonly voting_start_time: string;
+  readonly voting_end_time: string;
+  readonly content: {
+    readonly type: string;
+    readonly value: {
+      readonly title: string;
+      readonly description: string;
+    };
+  };
+}
+export interface GovProposalsResponse {
+  readonly height: string;
+  readonly result: readonly Proposal[];
+}
+export interface GovProposalResponse {
+  readonly height: string;
+  readonly result: Proposal;
+}
+export interface GovProposerResponse {
+  readonly height: string;
+  readonly result: {
+    readonly proposal_id: string;
+    readonly proposer: string;
+  };
+}
+export interface Deposit {
+  readonly amount: readonly Coin[];
+  readonly proposal_id: string;
+  readonly depositor: string;
+}
+export interface GovDepositsResponse {
+  readonly height: string;
+  readonly result: readonly Deposit[];
+}
+export interface GovDepositResponse {
+  readonly height: string;
+  readonly result: Deposit;
+}
+export interface GovTallyResponse {
+  readonly height: string;
+  readonly result: Tally;
+}
+export interface Vote {
+  readonly voter: string;
+  readonly proposal_id: string;
+  readonly option: string;
+}
+export interface GovVotesResponse {
+  readonly height: string;
+  readonly result: readonly Vote[];
+}
+export interface GovVoteResponse {
+  readonly height: string;
+  readonly result: Vote;
+}
+export interface GovExtension {
+  readonly gov: {
+    readonly parameters: (parametersType: GovParametersType) => Promise<GovParametersResponse>;
+    readonly proposals: () => Promise<GovProposalsResponse>;
+    readonly proposal: (proposalId: string) => Promise<GovProposalResponse>;
+    readonly proposer: (proposalId: string) => Promise<GovProposerResponse>;
+    readonly deposits: (proposalId: string) => Promise<GovDepositsResponse>;
+    readonly deposit: (proposalId: string, depositorAddress: string) => Promise<GovDepositResponse>;
+    readonly tally: (proposalId: string) => Promise<GovTallyResponse>;
+    readonly votes: (proposalId: string) => Promise<GovVotesResponse>;
+    readonly vote: (proposalId: string, voterAddress: string) => Promise<GovVoteResponse>;
+  };
+}
+export declare function setupGovExtension(base: LcdClient): GovExtension;
diff --git a/packages/sdk38/types/lcdapi/index.d.ts b/packages/sdk38/types/lcdapi/index.d.ts
index d22a29b4..b9f984ac 100644
--- a/packages/sdk38/types/lcdapi/index.d.ts
+++ b/packages/sdk38/types/lcdapi/index.d.ts
@@ -1,5 +1,18 @@
 export { AuthExtension, AuthAccountsResponse, setupAuthExtension } from "./auth";
 export { BankBalancesResponse, BankExtension, setupBankExtension } from "./bank";
+export {
+  GovExtension,
+  GovParametersResponse,
+  GovProposalsResponse,
+  GovProposalResponse,
+  GovProposerResponse,
+  GovDepositsResponse,
+  GovDepositResponse,
+  GovTallyResponse,
+  GovVotesResponse,
+  GovVoteResponse,
+  setupGovExtension,
+} from "./gov";
 export {
   MintAnnualProvisionsResponse,
   MintExtension,