diff --git a/dash-heroku-master/requirements.txt b/dash-heroku-master/requirements.txt
index a61c9df..bca04ad 100644
--- a/dash-heroku-master/requirements.txt
+++ b/dash-heroku-master/requirements.txt
@@ -197,7 +197,7 @@ tqdm==4.34.0
 traitlets==4.3.2
 typed-ast==1.4.0
 update-checker==0.16
-urllib3==1.25.3
+urllib3==1.26.5
 virtualenv==20.0.9
 wasabi==0.6.0
 wcwidth==0.1.7