diff --git a/requirements.txt b/requirements.txt
index 7d1849f..bce1190 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ lxml==4.2.1
 MarkupSafe==1.0
 mccabe==0.6.1
 numpy==1.16.0
-opencv-python==4.0.0.21
+opencv-python==4.1.1.26
 pick==0.6.4
 pillow>=6.2.0
 post==1.0.2