diff --git a/flake.nix b/flake.nix
index 651f582..44b2d9c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -153,7 +153,7 @@
 
         maintenance =
           let
-            script = pkgs.writeScript "maintenance" ''
+            script = pkgs.writeShellScript "maintenance" ''
               CURL_OPTIONS="--fail --silent --show-error --max-time 10 --retry 5 --output /dev/null"
               ${pkgs.curl}/bin/curl $CURL_OPTIONS http://webserver.healthchecks.svc/ping/$MAINTENANCE_CHECK_UUID/start
               ${self.packages.${system}.healthchecks}/app/manage.py prunenotifications