diff --git a/devenv.nix b/devenv.nix
index b51d8bc..7883385 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -1,4 +1,8 @@
-{...}: {
+{pkgs, ...}: {
+  packages = with pkgs; [
+    watchexec
+  ];
+
   git-hooks = {
     hooks = {
       alejandra.enable = true;