diff --git a/requirements.txt b/requirements.txt
index c7824e8..920909b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ simplegeneric==0.8.1
 six==1.11.0
 traitlets==4.3.2
 typing-extensions==3.7.2
-urllib3==1.22
+urllib3==1.26.5
 wcwidth==0.1.7
 websockets==6.0
 wrapt==1.10.11