diff --git a/requirements.txt b/requirements.txt
index 22e2d95..a0ba992 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,3 +26,8 @@ pycaw
 sounddevice
 PyYAML
 python-dotenv
+
+# GUI command constructor (tools/command_builder)
+ruamel.yaml
+pywebview
+pyautogui