diff --git a/requirements/development.txt b/requirements/development.txt
index cdb6de7..2a44db8 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -132,7 +132,7 @@ typed-ast==1.3.4
     # via mypy
 typing==3.6.6
     # via -r requirements/common.in
-urllib3==1.26.5
+urllib3==1.26.17
     # via requests
 virtualenv==16.4.3
     # via tox