diff --git a/requirements.txt b/requirements.txt
index a676b17..8820434 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -59,7 +59,7 @@ terminado==0.8.3
 testpath==0.4.4
 tornado==6.0.4
 traitlets==4.3.3
-urllib3==1.25.9
+urllib3==1.26.5
 wcwidth==0.1.9
 webencodings==0.5.1
 widgetsnbextension==3.5.1