diff --git a/modules/default.nix b/modules/default.nix
index 8ecd4a3..243e91e 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -119,18 +119,14 @@ in
       };
       systemd.services.nix-daemon.serviceConfig.CPUSchedulingPolicy = "batch";
 
-      nixpkgs.config = {
-        # Add unstable channel
-        packageOverrides = pkgs: {
+      nixpkgs.overlays = [
+        (import ../pkgs)
+        (final: prev: {
           unstable = import (import ../nix/sources.nix).nixpkgs-unstable {
             config = config.nixpkgs.config;
             overlays = config.nixpkgs.overlays;
           };
-        };
-      };
-
-      nixpkgs.overlays = [
-        (import ../pkgs)
+        })
       ];
 
       # Globally set Let’s Encrypt requirements