diff --git a/scripts/upgrade b/scripts/upgrade
index cc7a2ec..19d4504 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -442,7 +442,7 @@ fi
 if ! ynh_permission_exists --permission=admin_api; then
     ynh_permission_create --permission=admin_api --url=$domain/_synapse \
                           --label="Server administration API." --show_tile=false \
-                          --auth_header=false
+                          --auth_header=false --allowed=visitors
 fi
 
 #=================================================