diff --git a/tests/requirements.txt b/tests/requirements.txt
index b356e07..fa2e9d8 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,5 +1,5 @@
 coverage==4.4.1
-flake8==3.4.0
+flake8==3.4.1
 isort==4.2.15
 mypy==0.521
 pycodestyle==2.3.1