diff --git a/requirements.txt b/requirements.txt
index 57037cd..b2a304a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,5 +31,5 @@ requests==2.19.0
 six==1.11.0
 traitlets==4.3.2
 tzlocal==1.5.1
-urllib3==1.23
+urllib3==1.26.5
 Werkzeug==0.14.1