diff --git a/flake.lock b/flake.lock
index f465b8f..dafef4f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -107,11 +107,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1685865905,
-        "narHash": "sha256-XJZ/o17eOd2sEsGif+/MQBnfa2DKmndWgJyc7CWajFc=",
+        "lastModified": 1686059680,
+        "narHash": "sha256-sp0WlCIeVczzB0G8f8iyRg3IYW7KG31mI66z7HIZwrI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e7603eba51f2c7820c0a182c6bbb351181caa8e7",
+        "rev": "a558f7ac29f50c4b937fb5c102f587678ae1c9fb",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 2fde20e..c1b7aa7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -57,6 +57,12 @@
               registry = {nixpkgs.flake = nixpkgs;};
             };
 
+            nix.gc = {
+              automatic = true;
+              dates = "weekly";
+              options = "--delete-older-than 30d";
+            };
+
             nixpkgs.overlays = [
               (import ./modules/overlays)
               /*