diff --git a/requirements-test.txt b/requirements-test.txt
index 411daeba2..0c07bc0d0 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -3,6 +3,9 @@ pytest-django==2.6
 pytest==2.5.2
 pytest-cov==1.6
 flake8==2.2.2
+pep8==1.5.7
+mccabe==0.2.1
+pyflakes==0.8.1
 
 # Optional packages
 markdown>=2.1.0