diff --git a/modules/light-clients/09-localhost/types/client_state.go b/modules/light-clients/09-localhost/types/client_state.go
index 1670d4f1e6b..d8f0af38f00 100644
--- a/modules/light-clients/09-localhost/types/client_state.go
+++ b/modules/light-clients/09-localhost/types/client_state.go
@@ -79,6 +79,27 @@ func (cs ClientState) ExportMetadata(_ sdk.KVStore) []exported.GenesisMetadata {
 
 // CheckHeaderAndUpdateState updates the localhost client. It only needs access to the context
 func (cs *ClientState) CheckHeaderAndUpdateState(
+	ctx sdk.Context, cdc codec.BinaryCodec, clientStore sdk.KVStore, header exported.Header,
+) (exported.ClientState, exported.ConsensusState, error) {
+	return cs.UpdateState(ctx, cdc, clientStore, header)
+}
+
+// VerifyHeader is a no-op.
+func (cs *ClientState) VerifyHeader(
+	_ sdk.Context, _ codec.BinaryCodec, _ sdk.KVStore, _ exported.Header,
+) (exported.ClientState, exported.ConsensusState, error) {
+	return cs, nil, nil
+}
+
+// CheckForMisbehaviour returns false.
+func (cs *ClientState) CheckForMisbehaviour(
+	_ sdk.Context, _ codec.BinaryCodec, _ sdk.KVStore, _ exported.Header,
+) (bool, error) {
+	return false, nil
+}
+
+// UpdateState updates the localhost client. It only needs access to the context
+func (cs *ClientState) UpdateState(
 	ctx sdk.Context, _ codec.BinaryCodec, _ sdk.KVStore, _ exported.Header,
 ) (exported.ClientState, exported.ConsensusState, error) {
 	// use the chain ID from context since the localhost client is from the running chain (i.e self).
@@ -88,6 +109,13 @@ func (cs *ClientState) CheckHeaderAndUpdateState(
 	return cs, nil, nil
 }
 
+// UpdateStateOnMisbehaviour returns an error (no misbehaviour case).
+func (cs *ClientState) UpdateStateOnMisbehaviour(
+	_ sdk.Context, _ codec.BinaryCodec, _ sdk.KVStore, _ exported.Header,
+) (*ClientState, error) {
+	return nil, sdkerrors.Wrapf(clienttypes.ErrUpdateClientFailed, "cannot update localhost client on misbehaviour")
+}
+
 // CheckMisbehaviourAndUpdateState implements ClientState
 // Since localhost is the client of the running chain, misbehaviour cannot be submitted to it
 // Thus, CheckMisbehaviourAndUpdateState returns an error for localhost