diff --git a/requirements.txt b/requirements.txt
index 1a62d2e..29091ac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,4 @@
 # process, which may cause wedges in the gate later.
 
 pbr>=1.8 # Apache-2.0
+urllib3>=1.15.1 # MIT