diff --git a/requirements-dev.txt b/requirements-dev.txt
index f84407b..40e67eb 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,6 +1,6 @@
 black == 23.*
 docformatter[tomli] == 1.*
-flake8 == 6.*
+flake8 == 6.0.0
 isort == 5.*
 mypy == 1.*
 pandas-stubs == 2.0.*