diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..1d953f4
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix
diff --git a/.gitignore b/.gitignore
index 114a0ff..0d01c0d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,7 @@ bun.lockb
 # misc
 .DS_Store
 *.pem
+.direnv
 
 # debug
 npm-debug.log*
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..ea83a9f
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,7 @@
+{pkgs ? import <nixpkgs> {}}:
+pkgs.mkShell {
+  packages = with pkgs; [
+    nodejs-slim
+    bun
+  ];
+}