diff --git a/requirements.txt b/requirements.txt
index 794d67d..1c5218a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,6 +44,6 @@ pyzmq==17.1.2
 six==1.11.0
 tornado==5.1.1
 traitlets==4.3.2
-urllib3==1.22
+urllib3==1.26.5
 wcwidth==0.1.7
 Werkzeug==0.14.1