diff --git a/odin/common_configuration.nix b/odin/common_configuration.nix
index 0506ab7..ed26a4e 100644
--- a/odin/common_configuration.nix
+++ b/odin/common_configuration.nix
@@ -236,7 +236,10 @@ with lib;
     package = pkgs.nixFlakes;
     extraOptions = lib.optionalString (config.nix.package == pkgs.nixFlakes)
       "experimental-features = nix-command flakes";
-    gc.automatic = true;
+    gc = {
+      automatic = true;
+      options = "--delete-older-than 7d";
+    };
   };
 
   # This value determines the NixOS release from which the default