diff --git a/test-requirements.txt b/test-requirements.txt
index bb1f420..7922302 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,6 @@
 pytest >= 8.3.5
 pytest-cov >= 2.8.1
 tox >= 3.9.0
-flake8 >= 4.0.0
+flake8 >= 5.0.4
 types-python-dateutil >= 2.9.0.20241206
 mypy >= 1.5