diff --git a/external-worker/requirements.txt b/external-worker/requirements.txt
index 129f62e..882fa2b 100644
--- a/external-worker/requirements.txt
+++ b/external-worker/requirements.txt
@@ -32,7 +32,7 @@ mistune==0.8.4
 multidict==4.5.2
 nbconvert==5.5.0
 nbformat==4.4.0
-notebook==6.4.1
+notebook==6.4.10
 pandocfilters==1.4.2
 papermill==1.0.1
 parso==0.5.1