diff --git a/requirements.txt b/requirements.txt
index 1848b28..11cdc45 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 matplotlib==2.2.3
 numba==0.39.0
 numpy-quaternion==2018.7.5.21.55.13
-opencv-python==3.4.3.18
+opencv-python==3.4.7.28
 scikit-image==0.14.0
 scikit-learn==0.19.2
 scikit-video==1.1.10