diff --git a/requirements.txt b/requirements.txt
index f0abeaf..18c6c62 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -66,7 +66,7 @@ terminado==0.6
 testpath==0.3.1
 tornado==4.5.2
 traitlets==4.3.2
-urllib3==1.22
+urllib3==1.24.2
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.0.8