diff --git a/requirements.txt b/requirements.txt
index 621dee9..38e5095 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ Jinja2==2.9.6
 MarkupSafe==1.0
 numpy==1.13.1
 olefile==0.44
-opencv-python==3.2.0.7
+opencv-python==3.4.7.28
 Pillow==4.2.1
 python-engineio==1.7.0
 python-socketio==1.7.7