diff --git a/test-requirements.txt b/test-requirements.txt
index 2d21cd9..b444611 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,5 +1,5 @@
 pydocstyle==2.1.1
 pep8==1.7.1
-flake8==3.5.0
+flake8==3.6.0
 yapf==0.24.0
 bandit==1.5.1