diff --git a/vision/assignment1/requirements.txt b/vision/assignment1/requirements.txt
index 96eecba..36fe17a 100644
--- a/vision/assignment1/requirements.txt
+++ b/vision/assignment1/requirements.txt
@@ -32,7 +32,7 @@ mistune==0.8.4
 nbconvert==5.4.1
 nbdime==1.0.5
 nbformat==4.4.0
-notebook==5.7.8
+notebook==6.4.12
 numpy==1.16.2
 pandocfilters==1.4.2
 pexpect==4.6.0