diff --git a/modules/default.nix b/modules/default.nix
index daeb9c3..ba259be 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -73,6 +73,7 @@ in
         yubikey
         dev
         home
+        gc
       ];
     };
   };
diff --git a/modules/home/common.nix b/modules/home/common.nix
index 87dc6e3..46f3a7d 100644
--- a/modules/home/common.nix
+++ b/modules/home/common.nix
@@ -25,6 +25,12 @@
     fzf.enable = true;
   };
 
+  nix.gc = {
+    automatic = true;
+    frequency = "weekly";
+    options = "--delete-older-than 14d";
+  };
+
   home.packages = with pkgs; [
     # development
     python3