diff --git a/shell.nix b/shell.nix
index 7cdd721..6d64c55 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,4 +1,9 @@
-{ pkgs ? import <nixpkgs> { } }:
+{ pkgs ? import <nixpkgs> {
+    overlays = [
+      (import ./overlay.nix)
+    ];
+  }
+}:
 let
   pythonEnv = pkgs.python3.withPackages (_: [ ]);
 
@@ -8,6 +13,7 @@ pkgs.mkShell {
     pkgs.nix-prefetch-git
     pkgs.nixpkgs-fmt
     pkgs.go
+    pkgs.gomod2nix
     pythonEnv
   ];
 }