diff --git a/requirements.txt b/requirements.txt
index 2d2f422..5dce6a9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -91,7 +91,7 @@ nbformat==4.4.0
 networkx==2.1
 nltk==3.4.5
 nose==1.3.7
-notebook==6.1.5
+notebook==6.4.12
 numba==0.38.0
 numexpr==2.6.5
 numpy==1.14.3