diff --git a/requirements.txt b/requirements.txt
index a8d2e06..7616e33 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ mistune==0.8.4
 more-itertools==8.0.2
 nbconvert==5.6.1
 nbformat==4.4.0
-notebook==6.1.5
+notebook==6.4.12
 numpy==1.18.0
 pandocfilters==1.4.2
 parso==0.5.2