diff --git a/requirements.txt b/requirements.txt
index 4aad25b..45d906d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ testpath==0.3.1
 tornado==5.0.2
 tqdm==4.23.4
 traitlets==4.3.2
-urllib3==1.23
+urllib3==1.24.2
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.2.1