diff --git a/flake.nix b/flake.nix
index e8202e0..5556d0a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,7 +34,7 @@
               pip
               virtualenv
               requests
-
+              paho-mqtt
               # Optional: Add other helpful dev tools outside of the python-pkgs set if needed
               # (e.g., git, pre-commit, bash-completion)
             ]))