diff --git a/requirements.txt b/requirements.txt
index e70cc98..eab88ef 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,5 @@ Pillow==8.2.0
 progressbar==2.5
 scipy==1.1.0
 tqdm==4.24.0
-opencv-python==3.4.2.17
+opencv-python==3.4.7.28
 pycairo==1.17.1