diff --git a/modules/nix/default.nix b/modules/nix/default.nix
index 3f87f31..cba27db 100644
--- a/modules/nix/default.nix
+++ b/modules/nix/default.nix
@@ -21,6 +21,13 @@
     gc.automatic = true;
     optimise.automatic = true;
 
+    registry = {
+      nixpkgs.flake = flake.inputs.nixpkgs;
+      unstable.flake = flake.inputs.nixpkgs-unstable;
+      master.flake = flake.inputs.nixpkgs-master;
+      system.flake = flake.self;
+    };
+
     settings = {
       # Improve nix store disk usage
       auto-optimise-store = true;