diff --git a/requirements.txt b/requirements.txt
index 6db53f5..42d20cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 cffi==1.12.3
 configobj==5.0.6
 jupyter==1.0.0
-opencv-python==3.4.3.18
+opencv-python==3.4.7.28
 pip-chill==0.1.8
 pyinn==0.0.1
 rawpy==0.13.0