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/shell.nix b/shell.nix
index b998158..04c7a10 100644
--- a/shell.nix
+++ b/shell.nix
@@ -4,6 +4,6 @@
   default = pkgs.mkShell {
     # Enable experimental features without having to specify the argument
     NIX_CONFIG = "experimental-features = nix-command flakes";
-    nativeBuildInputs = with pkgs; [nix home-manager git just];
+    nativeBuildInputs = with pkgs; [nix home-manager git just alejandra];
   };
 }