diff --git a/requirements.txt b/requirements.txt
index 2f56b7b..473e681 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ matplotlib==3.0.3
 mock==2.0.0
 nibabel==2.4.0
 numpy==1.16.2
-opencv-python==4.0.0.21
+opencv-python==4.1.1.26
 pbr==5.1.3
 Pillow==6.0.0
 protobuf==3.7.1