diff --git a/requirements/dev.txt b/requirements/dev.txt
index b8111c8..f689b61 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -4,7 +4,7 @@ flake8==3.3.0
 git+https://github.com/nicfit/gitchangelog.git
 ipdb==0.10.3
 nicfit.py[cookiecutter]
-pip-tools
+pip-tools==1.9.0
 tox==2.7.0
 twine==1.9.1
 watchdog