diff --git a/requirements.txt b/requirements.txt
index 3bc89607..5ab39920 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,6 +27,6 @@ simplegeneric==0.8.1
 six==1.11.0
 traitlets==4.3.2
 typing==3.6.4
-urllib3==1.22
+urllib3==1.26.5
 wcwidth==0.1.7
 Werkzeug==0.14.1