diff --git a/setup.cfg b/setup.cfg
index e935db42..640bf8b2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,7 +44,7 @@ zip_safe = false
 
 [options.extras_require]
 test =
-  flake8>=3.6.0,<7
+  flake8>=3.6.0
   flake8-blind-except
   flake8-builtins
   flake8-class-newline