diff --git a/client/tendermint.go b/client/tendermint.go
index 0ecd5bc16f..5465c398d4 100644
--- a/client/tendermint.go
+++ b/client/tendermint.go
@@ -16,6 +16,7 @@ type TendermintRPC interface {
 	Status(context.Context) (*coretypes.ResultStatus, error)
 	Block(ctx context.Context, height *int64) (*coretypes.ResultBlock, error)
 	BlockchainInfo(ctx context.Context, minHeight, maxHeight int64) (*coretypes.ResultBlockchainInfo, error)
+	Commit(ctx context.Context, height *int64) (*coretypes.ResultCommit, error)
 	Tx(ctx context.Context, hash []byte, prove bool) (*coretypes.ResultTx, error)
 	TxSearch(
 		ctx context.Context,