diff --git a/docs/requirements.txt b/docs/requirements.txt
index 595f9f7..3f7bc60 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -6,7 +6,7 @@ sphinx_rtd_theme
 sphinxcontrib-bibtex
 torch==1.5.0+cpu
 torchvision==0.6.0+cpu
-opencv-python==4.2.0.34
+opencv-python==4.8.1.78
 visdom
 pandas
 seaborn