diff --git a/pkg/op/storage.go b/pkg/op/storage.go
index 942ee6a..449c2dd 100644
--- a/pkg/op/storage.go
+++ b/pkg/op/storage.go
@@ -30,7 +30,6 @@ type OPStorage interface {
 	AuthorizeClientIDSecret(context.Context, string, string) error
 	GetUserinfoFromScopes(context.Context, string, []string) (*oidc.Userinfo, error)
 	GetUserinfoFromToken(context.Context, string, string) (*oidc.Userinfo, error)
-	GetKeysByServiceAccount(ctx context.Context, id string) (*jose.JSONWebKeySet, error)
 	GetKeyByID(ctx context.Context, keyID string) (*jose.JSONWebKeySet, error)
 }