diff --git a/modules/periodic.nix b/modules/periodic.nix
index aef0b07..f7bedc7 100644
--- a/modules/periodic.nix
+++ b/modules/periodic.nix
@@ -16,7 +16,7 @@ in {
       ls | xargs -P10 -I{} git -C {} pull --rebase
     '';
     serviceConfig.Type = "oneshot";
-    OnCalendar = "22:00:00";
+    startAt = "22:00:00";
   };
 
   # PostgreSQL daily backups