diff --git a/train/requirements.txt b/train/requirements.txt
index 11d61c2..8be52f7 100644
--- a/train/requirements.txt
+++ b/train/requirements.txt
@@ -27,7 +27,7 @@ MarkupSafe==1.0
 mistune==0.8.3
 nbconvert==5.3.1
 nbformat==4.4.0
-notebook==5.6.0
+notebook==6.4.10
 pandocfilters==1.4.2
 pexpect==4.6.0
 pickleshare==0.7.4