diff --git a/requirements-dev.txt b/requirements-dev.txt
index 32cbdd9..0f1677e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -88,7 +88,7 @@ typed-ast==1.4.3
     # via mypy
 typing-extensions==3.7.4.3
     # via mypy
-urllib3==1.26.5
+urllib3==1.26.18
     # via requests
 wcwidth==0.2.5
     # via pytest