diff --git a/requirements.txt b/requirements.txt
index 7c69cc2..9065149 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -76,7 +76,7 @@ nltk==3.4.1
 notebook==6.1.5
 numdifftools==0.9.20
 numpy==1.15.4
-opencv-python==3.4.5.20
+opencv-python==3.4.7.28
 openvr==1.3.2201
 pandas==0.23.4
 pandocfilters==1.4.2