diff --git a/config/common/default.nix b/config/common/default.nix
index 2c1c731..f5266a5 100644
--- a/config/common/default.nix
+++ b/config/common/default.nix
@@ -54,6 +54,7 @@ with lib; {
   '';
   users.motdFile = "/var/lib/deployment/motd";
 
+  nix.package = pkgs.lix.override { enableGC = true; };
   nix.gc.automatic = true;
   nix.gc.options = "--delete-older-than 7d";
   nix.optimise.automatic = true;