diff --git a/systems/x86_64-linux/mx/default.nix b/systems/x86_64-linux/mx/default.nix
index 770ab1c..5446485 100644
--- a/systems/x86_64-linux/mx/default.nix
+++ b/systems/x86_64-linux/mx/default.nix
@@ -29,6 +29,7 @@
 
   system.autoUpgrade = {
     enable = true;
+    dates = "04:00";
     operation = "switch";
     allowReboot = true;
     flake = lib.mkForce "git+file:///var/lib/gitea/repositories/harald/nixcfg.git#mx";