diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05caea4f3..38b7d2f38 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - feat: metric: export Mpool message count ([filecoin-project/lotus#11361](https://github.com/filecoin-project/lotus/pull/11361))
 - feat: sealing: load SectorsSummary from sealing SectorStats instead of calling API each time ([filecoin-project/lotus#11353](https://github.com/filecoin-project/lotus/pull/11353))
 - fix: miner info: Show correct sector state counts ([filecoin-project/lotus#11456](https://github.com/filecoin-project/lotus/pull/11456))
+- feat: add support for specifying block number when calling `eth_estimateGas` RPC number which s
 
 ## Improvements
 - fix: Add time slicing to splitstore purging step during compaction to reduce lock congestion [filecoin-project/lotus#11269](https://github.com/filecoin-project/lotus/pull/11269)
diff --git a/api/api_full.go b/api/api_full.go
index f919bc13b..8a23131af 100644
--- a/api/api_full.go
+++ b/api/api_full.go
@@ -823,9 +823,9 @@ type FullNode interface {
 	EthGasPrice(ctx context.Context) (ethtypes.EthBigInt, error)                                                                                                     //perm:read
 	EthFeeHistory(ctx context.Context, p jsonrpc.RawParams) (ethtypes.EthFeeHistory, error)                                                                          //perm:read
 
-	EthMaxPriorityFeePerGas(ctx context.Context) (ethtypes.EthBigInt, error)                                             //perm:read
-	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (ethtypes.EthUint64, error)                                 //perm:read
-	EthCall(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthBytes, error) //perm:read
+	EthMaxPriorityFeePerGas(ctx context.Context) (ethtypes.EthBigInt, error)                                                     //perm:read
+	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) //perm:read
+	EthCall(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthBytes, error)         //perm:read
 
 	EthSendRawTransaction(ctx context.Context, rawTx ethtypes.EthBytes) (ethtypes.EthHash, error) //perm:read
 
diff --git a/api/api_gateway.go b/api/api_gateway.go
index 27e725457..63489f31b 100644
--- a/api/api_gateway.go
+++ b/api/api_gateway.go
@@ -114,7 +114,7 @@ type Gateway interface {
 	EthGasPrice(ctx context.Context) (ethtypes.EthBigInt, error)
 	EthFeeHistory(ctx context.Context, p jsonrpc.RawParams) (ethtypes.EthFeeHistory, error)
 	EthMaxPriorityFeePerGas(ctx context.Context) (ethtypes.EthBigInt, error)
-	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (ethtypes.EthUint64, error)
+	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error)
 	EthCall(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthBytes, error)
 	EthSendRawTransaction(ctx context.Context, rawTx ethtypes.EthBytes) (ethtypes.EthHash, error)
 	EthGetLogs(ctx context.Context, filter *ethtypes.EthFilterSpec) (*ethtypes.EthFilterResult, error)
diff --git a/api/mocks/mock_full.go b/api/mocks/mock_full.go
index 856d83813..f27aa6f79 100644
--- a/api/mocks/mock_full.go
+++ b/api/mocks/mock_full.go
@@ -1042,18 +1042,18 @@ func (mr *MockFullNodeMockRecorder) EthChainId(arg0 interface{}) *gomock.Call {
 }
 
 // EthEstimateGas mocks base method.
-func (m *MockFullNode) EthEstimateGas(arg0 context.Context, arg1 ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (m *MockFullNode) EthEstimateGas(arg0 context.Context, arg1 ethtypes.EthCall, arg2 ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "EthEstimateGas", arg0, arg1)
+	ret := m.ctrl.Call(m, "EthEstimateGas", arg0, arg1, arg2)
 	ret0, _ := ret[0].(ethtypes.EthUint64)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
 
 // EthEstimateGas indicates an expected call of EthEstimateGas.
-func (mr *MockFullNodeMockRecorder) EthEstimateGas(arg0, arg1 interface{}) *gomock.Call {
+func (mr *MockFullNodeMockRecorder) EthEstimateGas(arg0, arg1, arg2 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "EthEstimateGas", reflect.TypeOf((*MockFullNode)(nil).EthEstimateGas), arg0, arg1)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "EthEstimateGas", reflect.TypeOf((*MockFullNode)(nil).EthEstimateGas), arg0, arg1, arg2)
 }
 
 // EthFeeHistory mocks base method.
diff --git a/api/proxy_gen.go b/api/proxy_gen.go
index 2d1333495..3c53ba57b 100644
--- a/api/proxy_gen.go
+++ b/api/proxy_gen.go
@@ -255,7 +255,7 @@ type FullNodeMethods struct {
 
 	EthChainId func(p0 context.Context) (ethtypes.EthUint64, error) `perm:"read"`
 
-	EthEstimateGas func(p0 context.Context, p1 ethtypes.EthCall) (ethtypes.EthUint64, error) `perm:"read"`
+	EthEstimateGas func(p0 context.Context, p1 ethtypes.EthCall, p2 ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) `perm:"read"`
 
 	EthFeeHistory func(p0 context.Context, p1 jsonrpc.RawParams) (ethtypes.EthFeeHistory, error) `perm:"read"`
 
@@ -679,7 +679,7 @@ type GatewayMethods struct {
 
 	EthChainId func(p0 context.Context) (ethtypes.EthUint64, error) ``
 
-	EthEstimateGas func(p0 context.Context, p1 ethtypes.EthCall) (ethtypes.EthUint64, error) ``
+	EthEstimateGas func(p0 context.Context, p1 ethtypes.EthCall, p2 ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) ``
 
 	EthFeeHistory func(p0 context.Context, p1 jsonrpc.RawParams) (ethtypes.EthFeeHistory, error) ``
 
@@ -2134,14 +2134,14 @@ func (s *FullNodeStub) EthChainId(p0 context.Context) (ethtypes.EthUint64, error
 	return *new(ethtypes.EthUint64), ErrNotSupported
 }
 
-func (s *FullNodeStruct) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (s *FullNodeStruct) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall, p2 ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	if s.Internal.EthEstimateGas == nil {
 		return *new(ethtypes.EthUint64), ErrNotSupported
 	}
-	return s.Internal.EthEstimateGas(p0, p1)
+	return s.Internal.EthEstimateGas(p0, p1, p2)
 }
 
-func (s *FullNodeStub) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (s *FullNodeStub) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall, p2 ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	return *new(ethtypes.EthUint64), ErrNotSupported
 }
 
@@ -4400,14 +4400,14 @@ func (s *GatewayStub) EthChainId(p0 context.Context) (ethtypes.EthUint64, error)
 	return *new(ethtypes.EthUint64), ErrNotSupported
 }
 
-func (s *GatewayStruct) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (s *GatewayStruct) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall, p2 ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	if s.Internal.EthEstimateGas == nil {
 		return *new(ethtypes.EthUint64), ErrNotSupported
 	}
-	return s.Internal.EthEstimateGas(p0, p1)
+	return s.Internal.EthEstimateGas(p0, p1, p2)
 }
 
-func (s *GatewayStub) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (s *GatewayStub) EthEstimateGas(p0 context.Context, p1 ethtypes.EthCall, p2 ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	return *new(ethtypes.EthUint64), ErrNotSupported
 }
 
diff --git a/build/openrpc/full.json.gz b/build/openrpc/full.json.gz
index 29131b824..cbe2471bb 100644
Binary files a/build/openrpc/full.json.gz and b/build/openrpc/full.json.gz differ
diff --git a/build/openrpc/gateway.json.gz b/build/openrpc/gateway.json.gz
index cf83f9390..e9c3d096c 100644
Binary files a/build/openrpc/gateway.json.gz and b/build/openrpc/gateway.json.gz differ
diff --git a/documentation/en/api-v1-unstable-methods.md b/documentation/en/api-v1-unstable-methods.md
index 1dae12101..377f8b4e6 100644
--- a/documentation/en/api-v1-unstable-methods.md
+++ b/documentation/en/api-v1-unstable-methods.md
@@ -2409,7 +2409,8 @@ Inputs:
     "gasPrice": "0x0",
     "value": "0x0",
     "data": "0x07"
-  }
+  },
+  "string value"
 ]
 ```
 
diff --git a/gateway/node.go b/gateway/node.go
index 367e645c1..5c686e774 100644
--- a/gateway/node.go
+++ b/gateway/node.go
@@ -131,7 +131,7 @@ type TargetAPI interface {
 	EthGasPrice(ctx context.Context) (ethtypes.EthBigInt, error)
 	EthFeeHistory(ctx context.Context, p jsonrpc.RawParams) (ethtypes.EthFeeHistory, error)
 	EthMaxPriorityFeePerGas(ctx context.Context) (ethtypes.EthBigInt, error)
-	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (ethtypes.EthUint64, error)
+	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error)
 	EthCall(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthBytes, error)
 	EthSendRawTransaction(ctx context.Context, rawTx ethtypes.EthBytes) (ethtypes.EthHash, error)
 	EthGetLogs(ctx context.Context, filter *ethtypes.EthFilterSpec) (*ethtypes.EthFilterResult, error)
diff --git a/gateway/proxy_eth.go b/gateway/proxy_eth.go
index e6d433a17..4fc3b2fd6 100644
--- a/gateway/proxy_eth.go
+++ b/gateway/proxy_eth.go
@@ -353,13 +353,13 @@ func (gw *Node) EthMaxPriorityFeePerGas(ctx context.Context) (ethtypes.EthBigInt
 	return gw.target.EthMaxPriorityFeePerGas(ctx)
 }
 
-func (gw *Node) EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (gw *Node) EthEstimateGas(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	if err := gw.limit(ctx, stateRateLimitTokens); err != nil {
 		return 0, err
 	}
 
 	// todo limit gas? to what?
-	return gw.target.EthEstimateGas(ctx, tx)
+	return gw.target.EthEstimateGas(ctx, tx, blkParam)
 }
 
 func (gw *Node) EthCall(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthBytes, error) {
diff --git a/itests/eth_account_abstraction_test.go b/itests/eth_account_abstraction_test.go
index 8d92d0a04..62c0083a7 100644
--- a/itests/eth_account_abstraction_test.go
+++ b/itests/eth_account_abstraction_test.go
@@ -275,7 +275,7 @@ func TestEthAccountAbstractionFailsFromEvmActor(t *testing.T) {
 	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
 		From: &ethAddr,
 		Data: contract,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
diff --git a/itests/eth_conformance_test.go b/itests/eth_conformance_test.go
index 15b249977..c43dd7dfa 100644
--- a/itests/eth_conformance_test.go
+++ b/itests/eth_conformance_test.go
@@ -35,7 +35,7 @@ type ethAPIRaw struct {
 	EthBlockNumber                         func(context.Context) (json.RawMessage, error)
 	EthCall                                func(context.Context, ethtypes.EthCall, ethtypes.EthBlockNumberOrHash) (json.RawMessage, error)
 	EthChainId                             func(context.Context) (json.RawMessage, error)
-	EthEstimateGas                         func(context.Context, ethtypes.EthCall) (json.RawMessage, error)
+	EthEstimateGas                         func(context.Context, ethtypes.EthCall, ethtypes.EthBlockNumberOrHash) (json.RawMessage, error)
 	EthFeeHistory                          func(context.Context, ethtypes.EthUint64, string, []float64) (json.RawMessage, error)
 	EthGasPrice                            func(context.Context) (json.RawMessage, error)
 	EthGetBalance                          func(context.Context, ethtypes.EthAddress, ethtypes.EthBlockNumberOrHash) (json.RawMessage, error)
@@ -185,7 +185,7 @@ func TestEthOpenRPCConformance(t *testing.T) {
 				return ethapi.EthEstimateGas(context.Background(), ethtypes.EthCall{
 					From: &senderEthAddr,
 					Data: contractBin,
-				})
+				}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 			},
 		},
 
@@ -451,7 +451,7 @@ func createRawSignedEthTx(ctx context.Context, t *testing.T, client *kit.TestFul
 	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
 		From: &senderEthAddr,
 		Data: contractBin,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
diff --git a/itests/eth_deploy_test.go b/itests/eth_deploy_test.go
index ce4c94a28..422bc3449 100644
--- a/itests/eth_deploy_test.go
+++ b/itests/eth_deploy_test.go
@@ -63,7 +63,7 @@ func TestDeployment(t *testing.T) {
 	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
 		From: &ethAddr,
 		Data: contract,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
diff --git a/itests/eth_hash_lookup_test.go b/itests/eth_hash_lookup_test.go
index e1474a90d..dd3980867 100644
--- a/itests/eth_hash_lookup_test.go
+++ b/itests/eth_hash_lookup_test.go
@@ -50,7 +50,7 @@ func TestTransactionHashLookup(t *testing.T) {
 	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
 		From: &ethAddr,
 		Data: contract,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
@@ -353,7 +353,7 @@ func TestEthGetMessageCidByTransactionHashEthTx(t *testing.T) {
 	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
 		From: &ethAddr,
 		Data: contract,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
diff --git a/itests/eth_transactions_test.go b/itests/eth_transactions_test.go
index 026ac2387..0039ebde0 100644
--- a/itests/eth_transactions_test.go
+++ b/itests/eth_transactions_test.go
@@ -47,7 +47,7 @@ func TestValueTransferValidSignature(t *testing.T) {
 	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
 		From: &ethAddr,
 		Data: contract,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
@@ -235,7 +235,7 @@ func TestContractInvocation(t *testing.T) {
 		From: &ethAddr,
 		To:   &contractAddr,
 		Data: params,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
@@ -353,7 +353,7 @@ func deployContractTx(ctx context.Context, client *kit.TestFullNode, ethAddr eth
 	gaslimit, err := client.EthEstimateGas(ctx, ethtypes.EthCall{
 		From: &ethAddr,
 		Data: contract,
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	if err != nil {
 		return nil, err
 	}
diff --git a/itests/fevm_test.go b/itests/fevm_test.go
index cb69c036c..7b09ac7f9 100644
--- a/itests/fevm_test.go
+++ b/itests/fevm_test.go
@@ -661,7 +661,7 @@ func TestFEVMRecursiveActorCallEstimate(t *testing.T) {
 				From: &ethAddr,
 				To:   &contractAddr,
 				Data: params,
-			})
+			}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 			require.NoError(t, err)
 			require.LessOrEqual(t, int64(gaslimit), build.BlockGasLimit)
 
@@ -820,7 +820,7 @@ func TestFEVMBareTransferTriggersSmartContractLogic(t *testing.T) {
 		From:  &accntEth,
 		To:    &contractEth,
 		Value: ethtypes.EthBigInt(big.NewInt(100)),
-	})
+	}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 	require.NoError(t, err)
 
 	maxPriorityFeePerGas, err := client.EthMaxPriorityFeePerGas(ctx)
@@ -1037,7 +1037,7 @@ func TestFEVMErrorParsing(t *testing.T) {
 				_, err := e.EthEstimateGas(ctx, ethtypes.EthCall{
 					To:   &contractAddrEth,
 					Data: entryPoint,
-				})
+				}, ethtypes.NewEthBlockNumberOrHashFromPredefined("latest"))
 				require.ErrorContains(t, err, expected)
 			})
 		})
diff --git a/node/impl/full/dummy.go b/node/impl/full/dummy.go
index 743eadf34..857b4c57f 100644
--- a/node/impl/full/dummy.go
+++ b/node/impl/full/dummy.go
@@ -122,7 +122,7 @@ func (e *EthModuleDummy) EthGasPrice(ctx context.Context) (ethtypes.EthBigInt, e
 	return ethtypes.EthBigIntZero, ErrModuleDisabled
 }
 
-func (e *EthModuleDummy) EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (e *EthModuleDummy) EthEstimateGas(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	return 0, ErrModuleDisabled
 }
 
diff --git a/node/impl/full/eth.go b/node/impl/full/eth.go
index 22f78e723..12a9d56ea 100644
--- a/node/impl/full/eth.go
+++ b/node/impl/full/eth.go
@@ -66,7 +66,7 @@ type EthModuleAPI interface {
 	NetListening(ctx context.Context) (bool, error)
 	EthProtocolVersion(ctx context.Context) (ethtypes.EthUint64, error)
 	EthGasPrice(ctx context.Context) (ethtypes.EthBigInt, error)
-	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (ethtypes.EthUint64, error)
+	EthEstimateGas(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error)
 	EthCall(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthBytes, error)
 	EthMaxPriorityFeePerGas(ctx context.Context) (ethtypes.EthBigInt, error)
 	EthSendRawTransaction(ctx context.Context, rawTx ethtypes.EthBytes) (ethtypes.EthHash, error)
@@ -1007,7 +1007,7 @@ func (a *EthModule) applyMessage(ctx context.Context, msg *types.Message, tsk ty
 	return res, nil
 }
 
-func (a *EthModule) EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (ethtypes.EthUint64, error) {
+func (a *EthModule) EthEstimateGas(ctx context.Context, tx ethtypes.EthCall, blkParam ethtypes.EthBlockNumberOrHash) (ethtypes.EthUint64, error) {
 	msg, err := ethCallToFilecoinMessage(ctx, tx)
 	if err != nil {
 		return ethtypes.EthUint64(0), err
@@ -1017,7 +1017,11 @@ func (a *EthModule) EthEstimateGas(ctx context.Context, tx ethtypes.EthCall) (et
 	// gas estimation actually run.
 	msg.GasLimit = 0
 
-	ts := a.Chain.GetHeaviestTipSet()
+	ts, err := getTipsetByEthBlockNumberOrHash(ctx, a.Chain, blkParam)
+	if err != nil {
+		return ethtypes.EthUint64(0), xerrors.Errorf("failed to process block param: %v; %w", blkParam, err)
+	}
+
 	gassedMsg, err := a.GasAPI.GasEstimateMessageGas(ctx, msg, nil, ts.Key())
 	if err != nil {
 		// On failure, GasEstimateMessageGas doesn't actually return the invocation result,