diff --git a/requirements.txt b/requirements.txt
index da36fff..5fa2f8f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ terminado==0.8.1
 testpath==0.3.1
 tornado==5.0.2
 traitlets==4.3.2
-urllib3==1.22
+urllib3==1.24.2
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.2.1