diff --git a/requirements/heroku.txt b/requirements/heroku.txt
index 40a885c..1661e4c 100644
--- a/requirements/heroku.txt
+++ b/requirements/heroku.txt
@@ -33,7 +33,7 @@ selenium==3.141.0
 six==1.10.0
 SQLAlchemy==1.1.11
 text-unidecode==1.2
-urllib3==1.24.1
+urllib3==1.26.5
 visitor==0.1.3
 webencodings==0.5.1
 Werkzeug==0.12.2