diff --git a/pyproject.toml b/pyproject.toml
index 6ab7750..e0e6b8f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ typing-extensions = ">= 4.7.1"
 pytest = ">=8.3.5"
 pytest-cov = ">=5.0.0"
 tox = ">=4.25.0"
-flake8 = ">= 4.0.0"
+flake8 = ">=5.0.4"
 types-python-dateutil = ">= 2.8.19.14"
 mypy = ">=1.14.1"