diff --git a/requirements.txt b/requirements.txt
index 3819aa0..73e80e4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ mistune==0.8.4
 nbconvert==5.4.0
 nbformat==4.4.0
 nltk==3.4.5
-notebook==6.4.1
+notebook==6.4.12
 numpy==1.17.0
 pandas==0.25.0
 pandocfilters==1.4.2