diff --git a/.envrc b/.envrc
--- a/.envrc
+++ b/.envrc
@@ -2,6 +2,7 @@
 watch_file flake.nix
 watch_file flake.lock
 watch_file nix/overlay.nix
+watch_file nix/dev-shell.nix
 
 if ! has nix_direnv_version || ! nix_direnv_version 2.2.1; then
   source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.2.1/direnvrc" "sha256-zelF0vLbEl5uaqrfIzbgNzJWGmLzCmYAkInj/LNxvKs="