diff --git a/infra/values/base/backstage-values.yaml b/infra/values/base/backstage-values.yaml
index 75b59ab..5b303d6 100644
--- a/infra/values/base/backstage-values.yaml
+++ b/infra/values/base/backstage-values.yaml
@@ -66,7 +66,7 @@ upstream:
               dangerouslyAllowSignInWithoutUserInCatalog: true
               signIn:
                 resolvers:
-                - resolver: emailMatchingUserEntityProfileEmail
+                - resolver: preferredUsernameMatchingUserEntityName
 
       # -- Gitea SCM integration (for catalog URL resolution)
       integrations: