diff --git a/binder/requirements.txt b/binder/requirements.txt
index e3a6221..2e1791b 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -54,7 +54,7 @@ terminado==0.8.2
 testpath==0.4.2
 tornado==6.0.3
 traitlets==4.3.2
-urllib3==1.25.3
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.5.1