diff --git a/requirements.txt b/requirements.txt
index b9ea558..7fec11f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,6 +27,6 @@ pytz==2017.2
 requests==2.18.3
 six==1.10.0
 traitlets==4.3.2
-urllib3==1.22
+urllib3==1.26.5
 Werkzeug==0.12.2
 wheel==0.26.0