diff --git a/dev_requirements.txt b/dev_requirements.txt
index 3d1b0624..59bf43de 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -1,5 +1,6 @@
 -r docs/docs-requirements.txt
 ansible==2.3.1.0
+coverage==4.5.1
 Django==1.6.11; python_version < '2.7'
 Django==1.11.5; python_version >= '2.7' # for module_finder_test
 https://github.com/docker/docker-py/archive/1.10.6.tar.gz; python_version < '2.7'