diff --git a/home.nix b/home.nix
index c285d18..5d94bf7 100644
--- a/home.nix
+++ b/home.nix
@@ -94,9 +94,11 @@
 
   # Let Home Manager install and manage itself.
   programs.home-manager.enable = true;
+  services.home-manager.autoExpire.enable = true;
 
   nix = {
     package = pkgs.nix;
+    gc.automatic = true;
     settings.experimental-features = [ "nix-command" "flakes" ];
   };