diff --git a/requirements.txt b/requirements.txt
index 5d74301..24e2ee0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-opencv-python==3.4.0
+opencv-python==3.4.7.28
 numpy==1.15.2
 keras==2.2.0
 mxnet==1.3.0