diff --git a/app/app.go b/app/app.go
index 4bb8121b..f6a358f4 100644
--- a/app/app.go
+++ b/app/app.go
@@ -354,6 +354,8 @@ func NewEthermintApp(
 	)
 	bApp.SetCommitMultiStoreTracer(traceStore)
 	bApp.SetVersion(version.Version)
+
+	evmtypes.RegisterInterfaces(interfaceRegistry)
 	bApp.SetInterfaceRegistry(interfaceRegistry)
 
 	// configure state listening capabilities using AppOptions
diff --git a/x/evm/types/codec.go b/x/evm/types/codec.go
index 4452bac4..b44db514 100644
--- a/x/evm/types/codec.go
+++ b/x/evm/types/codec.go
@@ -6,6 +6,7 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	"github.com/cosmos/cosmos-sdk/types/msgservice"
+	"github.com/cosmos/cosmos-sdk/types/tx"
 	proto "github.com/gogo/protobuf/proto"
 )
 
@@ -26,6 +27,10 @@ func RegisterInterfaces(registry codectypes.InterfaceRegistry) {
 		(*ExtensionOptionsEthereumTxI)(nil),
 		&ExtensionOptionsEthereumTx{},
 	)
+	registry.RegisterImplementations(
+		(*tx.TxExtensionOptionI)(nil),
+		&ExtensionOptionsEthereumTx{},
+	)
 	registry.RegisterInterface(
 		"ethermint.evm.v1.TxData",
 		(*TxData)(nil),