diff --git a/requirements.txt b/requirements.txt
index 8dec977b4..dd8c1959e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,8 +20,5 @@ python-neutronclient>=2.3.6,<3
 python-swiftclient>=2.2.0
 python-ceilometerclient>=1.0.6
 pytz>=2013.6
-# Horizon Utility Requirements
-# for SECURE_KEY generation
-lockfile>=0.8
 
 python-ironicclient>=0.2.1