diff --git a/requirements.txt b/requirements.txt
index 88e45ef..1d1cbda 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ networkx==2.1
 nibabel==2.3.0
 notebook==5.6.0
 numpy==1.14.5
-opencv-contrib-python==3.4.3.18
+opencv-contrib-python==3.4.7.28
 pandas==0.20.3
 pandocfilters==1.4.2
 parso==0.2.1