diff --git a/requirements.txt b/requirements.txt
index 9c61b12..5add8e7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.7
 nltk==3.5
-notebook==6.1.5
+notebook==6.4.12
 numpy==1.19.0
 packaging==20.4
 pandas==1.0.5