diff --git a/lass/1systems/prism.nix b/lass/1systems/prism.nix
index 76710ac9d..5da66d265 100644
--- a/lass/1systems/prism.nix
+++ b/lass/1systems/prism.nix
@@ -224,6 +224,11 @@ in {
         OnCalendar = "*:0/5";
       };
     }
+    {
+      lass.usershadow = {
+        enable = true;
+      };
+    }
   ];
 
   krebs.build.host = config.krebs.hosts.prism;