diff --git a/hosts/clunk/default.nix b/hosts/clunk/default.nix
index d424ddf..f1aca9a 100644
--- a/hosts/clunk/default.nix
+++ b/hosts/clunk/default.nix
@@ -86,5 +86,9 @@ in
     };
   };
 
-  system.stateVersion = "22.11";
+  system = {
+    autoUpgrade.allowReboot = false;
+    autoUpgrade.enable = false;
+    stateVersion = "22.11";
+  };
 }