diff --git a/etc/requirements_dev.txt b/etc/requirements_dev.txt
index 3e5226e0..5f4537ac 100644
--- a/etc/requirements_dev.txt
+++ b/etc/requirements_dev.txt
@@ -11,7 +11,6 @@ flake8==2.1.0
 mccabe==0.2.1
 pep8==1.5.7
 pyflakes==0.8.1
-pip-tools==0.3.4
 
 # Documentation Conversion