diff --git a/user/manager.go b/user/manager.go
index 6b263851..182dbaeb 100644
--- a/user/manager.go
+++ b/user/manager.go
@@ -15,4 +15,5 @@ type Manager interface {
 	CheckAccess(accessMode string, allowedPrincipalIDs []string, userPrincipalID string, groups []v3.Principal) (bool, error)
 	SetPrincipalOnCurrentUserByUserID(userID string, principal v3.Principal) (*v3.User, error)
 	CreateNewUserClusterRoleBinding(userName string, userUID apitypes.UID) error
+	GetUserByPrincipalID(principalName string) (*v3.User, error)
 }