diff --git a/requirements.txt b/requirements.txt
index 6f83d9e..50cf837 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ swagger-spec-validator==2.4.0
 toml==0.9.6
 tox==3.4.0
 traitlets==4.3.2
-urllib3==1.23
+urllib3==1.26.5
 virtualenv==16.0.0
 wcwidth==0.1.7
 Werkzeug==0.14.1