diff --git a/requirements/requirements_dev.txt b/requirements/requirements_dev.txt
index 9131465b10..c6583f2ae8 100644
--- a/requirements/requirements_dev.txt
+++ b/requirements/requirements_dev.txt
@@ -3,6 +3,7 @@ django-debug-toolbar==1.4
 unittest2
 pep8
 flake8
+pyflakes==1.0.0 # Pinned until PR merges https://gitlab.com/pycqa/flake8/merge_requests/56
 pytest
 pytest-cov
 pytest-django