diff --git a/requirements.txt b/requirements.txt
index de34f87..679bf4e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,5 +19,5 @@ pytz==2017.2
 requests==2.18.1
 six==1.10.0
 traitlets==4.3.2
-urllib3==1.21.1
+urllib3==1.24.2
 us==0.9.1