diff --git a/setup.py b/setup.py
index 13b24f5..161fd8b 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
         'slackclient',
         'streql==3.0.2',
         'twilio==4.5.0',
-        'urllib3==1.12',
+        'urllib3==1.21.1',
         'falcon==1.1.0',
         'ujson==1.35',
     ],