diff --git a/requirements.txt b/requirements.txt
index 6a80dc5..ff590ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,6 +52,6 @@ terminado==0.6
 testpath==0.3
 tornado==4.4.2
 traitlets==4.3.1
-urllib3==1.20
+urllib3==1.24.2
 wcwidth==0.1.7
 widgetsnbextension==1.2.6