diff --git a/config/c3d2.nix b/config/c3d2.nix
index b9e4ef53..6f5475a9 100644
--- a/config/c3d2.nix
+++ b/config/c3d2.nix
@@ -134,7 +134,8 @@ in {
       extraOptions = "experimental-features = nix-command flakes";
       gc = {
         automatic = true;
-        dates = "weekly";
+        dates = "06:00";
+        randomizedDelaySec = "6h";
       };
       package = pkgs.nixUnstable;
       registry.c3d2 = {