diff --git a/modules/periodic.nix b/modules/periodic.nix
index b891ef2..3669912 100644
--- a/modules/periodic.nix
+++ b/modules/periodic.nix
@@ -26,7 +26,7 @@ in {
       ${pkgs.bash}/bin/bash -c "/home/coolneng/.emacs.d/bin/doom -y purge"
     '';
     serviceConfig.Type = "oneshot";
-    startAt = "13-*-* 20:00:00";
+    startAt = "*-*-13 20:00:00";
   };
 
   # Upgrade Neovim plugins weekly