diff --git a/requirements.txt b/requirements.txt
index 02412ff..858f127 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -114,7 +114,7 @@ nbformat==4.1.0
 networkx==1.11
 nltk==3.2.2
 nose==1.3.7
-notebook==6.1.5
+notebook==6.4.1
 numba==0.37.0
 numexpr==2.6.2
 numpy==1.14.3