diff --git a/requirements.txt b/requirements.txt
index 734892a..67a42e7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 flask
 flask-socketio
-opencv-python
+opencv-python-headless # server side
+# opencv-python # client side
 pynng
\ No newline at end of file