diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..65326bb
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 43686af..95e16ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 tests/output
 *.orig
 *.rej
+.direnv
\ No newline at end of file
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..28966f9
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,7 @@
+{ pkgs ? import <nixpkgs> { } }:
+
+pkgs.mkShell {
+  packages = with pkgs; [
+    pkgs.poetry
+  ];
+}