diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ setup(
     url='https://github.com/EmilStenstrom/conllu/',
     download_url='https://github.com/EmilStenstrom/conllu/archive/%s.zip' % VERSION,
     install_requires=[],
-    tests_require=["nose>=1.3.7", "flake8>=3.0.4"],
+    tests_require=["nose>=1.3.7", "flake8>=3.5.0"],
     test_suite="nose.collector",
     keywords=['conllu', 'conll', 'conll-u', 'parser', 'nlp'],
     classifiers=[
Run tests with latest version of flake8.