diff --git a/development/user-image/winterhub/requirements.txt b/development/user-image/winterhub/requirements.txt
index 65b1754..05281d3 100644
--- a/development/user-image/winterhub/requirements.txt
+++ b/development/user-image/winterhub/requirements.txt
@@ -2,7 +2,7 @@
 # data8; foundation
 # expanded to Introduction to Probability Theory HBRS
 tornado==4.5.3
-notebook==5.6.0
+notebook==6.4.12
 datascience==0.10.4
 matplotlib==2.2.2
 numpy==1.14.4