diff --git a/hive.nix b/hive.nix
index 84bd7b4..98e7fcf 100644
--- a/hive.nix
+++ b/hive.nix
@@ -75,9 +75,17 @@ in
       # Deployment config is specified in meta.nodes.${node}.deployment
       inherit (meta.nodes.${name}) deployment;
 
-      # Set NIX_PATH to the patched version of nixpkgs
-      nix.nixPath = [ "nixpkgs=${mkNixpkgs' (version name)}" ];
-      nix.optimise.automatic = true;
+      nix = {
+        # Set NIX_PATH to the patched version of nixpkgs
+        nixPath = [ "nixpkgs=${mkNixpkgs' (version name)}" ];
+        optimise.automatic = true;
+
+        gc = {
+          automatic = true;
+          dates = "weekly";
+          options = "--delete-older-than 7d";
+        };
+      };
 
       # Allow unfree packages
       nixpkgs.config.allowUnfree = true;