diff --git a/requirements.txt b/requirements.txt
index a22580e..df571f5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ mistune==0.7.2
 nbconvert==6.3.0
 nbformat==4.0.1
 nltk==3.4.5
-notebook==6.1.5
+notebook==6.4.12
 numpy==1.10.4
 pandas==0.17.1
 path.py==8.1.2