diff --git a/docs/requirements.txt b/docs/requirements.txt
index e07c41c..87fe87e 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -32,7 +32,7 @@ more-itertools==5.0.0
 murmurhash3==2.3.5
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.8
+notebook==6.4.12
 numpy==1.16.0
 packaging==19.0
 pandocfilters==1.4.2