diff --git a/configuration.nix b/configuration.nix
index 6e80bf0..94cda99 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -66,6 +66,7 @@
   system.autoUpgrade = {
     enable = true;
     allowReboot = true;
+    dates = "Sat *-*-* 04:40:00";
   };
 
   # Run Nix garbage collector, while avoiding recompilation