diff --git a/keystone/server/single.yml b/keystone/server/single.yml
index aae179f..72dc045 100644
--- a/keystone/server/single.yml
+++ b/keystone/server/single.yml
@@ -35,6 +35,8 @@
         expiration: 3600
         max_active_keys: 3
         location: /var/lib/keystone/fernet-keys
+      credential:
+        location: /var/lib/keystone/credential-keys
       message_queue:
         engine: rabbitmq
         host: ${_param:single_address}