diff --git a/requirements.txt b/requirements.txt
index 1a478a4..a500b02 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,7 +45,7 @@ nbformat==4.4.0
 networkx==2.1
 notebook==5.4.1
 numpy==1.14.3
-opencv-python==3.4.0.12
+opencv-python==3.4.7.28
 pandocfilters==1.4.2
 parso==0.2.0
 pexpect==4.5.0