diff --git a/requirements.txt b/requirements.txt
index 9567383..1a4cc07 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,6 +39,6 @@ simplegeneric==0.8.1
 six==1.10.0
 tornado==4.5.1
 traitlets==4.3.2
-urllib3==1.22
+urllib3==1.26.5
 wcwidth==0.1.7
 Werkzeug==0.12.2