diff --git a/requirements.txt b/requirements.txt
index 1dfc8bc..808ab97 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ mistune==0.8.4
 more-itertools==5.0.0
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.4
+notebook==6.4.12
 numpy==1.15.4
 pandas==0.23.4
 pandocfilters==1.4.2