diff --git a/setup.cfg b/setup.cfg
index b62c115..5f3401c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -42,7 +42,7 @@ install_requires =
 
 [options.extras_require]
 dev =
-    flake8
+    flake8==5.0.4
     flake8-quotes
     mypy
     py>=1.9.0