diff --git a/tox.ini b/tox.ini
index 2e702da2..c110b47b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -45,7 +45,9 @@ commands = py.test {posargs}
 [testenv:flake8]
 # Note: Settings for flake8 exists in the setup.cfg file
 changedir = {toxinidir}
-deps = flake8
+deps =
+  flake8
+  flake8-pyproject
 commands =
   flake8 .