diff --git a/requirements_for_test.txt b/requirements_for_test.txt
index 36ed7cfdc..83822764e 100644
--- a/requirements_for_test.txt
+++ b/requirements_for_test.txt
@@ -7,4 +7,4 @@ coveralls==1.2.0
 httpretty==0.8.14
 beautifulsoup4==4.6.0
 freezegun==0.3.9
-flake8==3.4.1
+flake8==3.5.0