diff --git a/requirements.txt b/requirements.txt
index 8563269..c482381 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -63,7 +63,7 @@ tornado==6.0.2
 traitlets==4.3.2
 trueskill==0.4.5
 typed-ast==1.3.5
-urllib3==1.25.3
+urllib3==1.25.8
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.4.2