diff --git a/requirements.txt b/requirements.txt
index 3a76100..f279272 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -56,7 +56,7 @@ testpath==0.3.1
 tornado==4.5.1
 tqdm==4.19.4
 traitlets==4.3.2
-urllib3==1.22
+urllib3==1.24.2
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==2.0.0