diff --git a/configuration.nix b/configuration.nix
index d85abfd..e4707c2 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -53,6 +53,11 @@
 
   nix.settings.experimental-features = ["nix-command" "flakes"];
   nix.package = pkgs.nixVersions.nix_2_21;
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 10d";
+  };
 
   networking = {
     networkmanager.enable = true;