diff --git a/requirements.txt b/requirements.txt
index e07d2c3..ef14c52 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.4
 nltk==3.5
-notebook==6.0.3
+notebook==6.4.12
 numpy==1.18.1
 pandas==1.0.3
 pandocfilters==1.4.2