diff --git a/setup.cfg b/setup.cfg
index 8642fdf7..180f4f03 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,7 +34,7 @@ tests_require =
 
 [options.extras_require]
 testing =
-    flake8~=3.5
+    flake8==3.7.9
     flake8-bugbear
     flake8-commas==2.0.0
     flake8-docstrings