diff --git a/stack.env b/stack.env
index 65aa47337..23a684677 100644
--- a/stack.env
+++ b/stack.env
@@ -463,7 +463,7 @@ OPENID_ADMIN_ROLE=
 OPENID_ADMIN_ROLE_PARAMETER_PATH=
 OPENID_ADMIN_ROLE_TOKEN_KIND=
 # Set to determine which user info property returned from OpenID Provider to store as the User's username
-OPENID_USERNAME_CLAIM=preferred_username
+OPENID_USERNAME_CLAIM=email
 # Set to determine which user info property returned from OpenID Provider to store as the User's name
 OPENID_NAME_CLAIM=name
 # Optional audience parameter for OpenID authorization requests