diff --git a/jupyter_container/requirements.txt b/jupyter_container/requirements.txt
index 1c16c19..70f6797 100644
--- a/jupyter_container/requirements.txt
+++ b/jupyter_container/requirements.txt
@@ -83,7 +83,7 @@ terminado==0.9.2
 testpath==0.4.4
 tornado==6.1
 traitlets==5.0.5
-urllib3==1.26.2
+urllib3==1.26.4
 wcwidth==0.2.5
 webencodings==0.5.1
 Werkzeug==1.0.1