diff --git a/cover/requirements.txt b/cover/requirements.txt
index 1a01ec3..b5755ec 100644
--- a/cover/requirements.txt
+++ b/cover/requirements.txt
@@ -46,7 +46,7 @@ mistune==0.8.4
 nbconvert==5.4.0
 nbformat==4.4.0
 nose==1.3.7
-notebook==5.7.0
+notebook==6.1.5
 numpy==1.15.2
 oauthlib==2.1.0
 opencv-python==3.4.3.18