diff --git a/requirements-dev.txt b/requirements-dev.txt
index 9ded6d0..67798e1 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -39,5 +39,5 @@ tqdm==4.23.4
 traitlets==4.3.2
 twine==1.11.0
 typed-ast==1.3.2
-urllib3==1.26.5
+urllib3==1.26.18
 wcwidth==0.1.7