diff --git a/app.py b/app.py
index d30020f..c3524d4 100644
--- a/app.py
+++ b/app.py
@@ -3,8 +3,6 @@ from flask_socketio import SocketIO, emit, join_room
 
 import eventlet
 
-import markdown
-
 import openai
 
 import os
diff --git a/requirements.txt b/requirements.txt
index 43c9e6d..5f53170 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,6 @@ openai
 
 # sqlite
 Flask-SQLAlchemy
+
+# support local dev
+python-dotenv