diff --git a/goofy-server/src/main/resources/application.yml b/goofy-server/src/main/resources/application.yml
index 38e8bd89fc4d9eb2a2ab8d6a10bc80e876cd145b..820a6464d139aff685d7b46e86a173c2c0af7e46 100644
--- a/goofy-server/src/main/resources/application.yml
+++ b/goofy-server/src/main/resources/application.yml
@@ -65,7 +65,7 @@ grpc:
       negotiationType: PLAINTEXT
     user-manager:
       address: static://127.0.0.1:9000
-      negotiationType: PLAINTEXT 
+      negotiationType: TLS
 
 kop:
   auth: