diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..4967cac
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,8 @@
+with import <nixpkgs> {};
+stdenv.mkDerivation {
+  name = "env";
+  buildInputs = [
+    ruby.devEnv
+    bundix
+  ];
+}