diff --git a/modules/common/nix.nix b/modules/common/nix.nix
index 0963114..61635e0 100644
--- a/modules/common/nix.nix
+++ b/modules/common/nix.nix
@@ -13,7 +13,7 @@
     };
     gc = {
       automatic = true;
-      options = "--delete-older-than 30d";
+      options = "--delete-older-than 7d";
       dates = "weekly";
     };
     optimise.automatic = true;