diff --git a/requirements.txt b/requirements.txt
index b8ef103..d34ee8b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ pytz==2017.2
 requests==2.18.1
 six==1.10.0
 tornado==4.5.1
-urllib3==1.21.1
+urllib3==1.26.5
 vine==1.1.4
 virtualenv==15.1.0
 whitenoise==3.3.0