diff --git a/requirements.txt b/requirements.txt
index f633424..789a8fd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ mistune==0.8.4
 more-itertools==7.2.0
 nbconvert==5.6.1
 nbformat==4.4.0
-notebook==6.4.1
+notebook==6.4.12
 numpy==1.17.3
 pandocfilters==1.4.2
 parso==0.5.1