diff --git a/requirements.txt b/requirements.txt
index 0e4effe..b6157eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ matplotlib==3.0.1
 networkx==2.2
 numpy==1.14.5
 opencv-contrib-python==3.4.3.18
-opencv-python==3.4.2.17
+opencv-python==3.4.7.28
 pafy==0.5.4
 pandas==0.23.4
 Pillow==5.2.0