diff --git a/legacy/openCV/requirements.txt b/legacy/openCV/requirements.txt
index e709f4f..32a77f3 100644
--- a/legacy/openCV/requirements.txt
+++ b/legacy/openCV/requirements.txt
@@ -28,7 +28,7 @@ Markdown==3.0.1
 MarkupSafe==1.0
 matplotlib==3.0.0
 mistune==0.8.4
-nbconvert==5.4.0
+nbconvert==6.5.1
 nbformat==4.4.0
 notebook==5.7.8
 numpy==1.15.2