diff --git a/requirements.txt b/requirements.txt
index 5f2afdc..4a8f091 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ matplotlib==2.1.1
 mistune==0.8.1
 nbconvert==5.3.1
 nbformat==4.4.0
-notebook==6.1.5
+notebook==6.4.1
 numpy==1.13.3
 pandas==0.20.3
 pandocfilters==1.4.2