diff --git a/requirements.txt b/requirements.txt
index cd109eb..b8800bd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ mccabe==0.6.1
 mistune==0.8.3
 nbconvert==5.4.0
 nbformat==4.4.0
-notebook==5.7.0
+notebook==6.4.12
 numpy==1.15.2
 pandocfilters==1.4.2
 parso==0.3.1