diff --git a/requirements.txt b/requirements.txt
index 8b1f8df..201cbb7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ nbformat==4.4.0
 notebook==5.5.0
 numpy==1.14.3
 opencv-contrib-python==3.4.1.15
-opencv-python==3.4.1.15
+opencv-python==4.2.0.32
 pandocfilters==1.4.2
 parso==0.2.1
 pickleshare==0.7.4