diff --git a/test-requirements.txt b/test-requirements.txt
index fa07a03..699073b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,5 +2,5 @@ pytest-cov >= 5.0.0
 pytest >= 8.3.5
 tox >= 4.25.0
 flake8 >= 5.0.4
-types-python-dateutil >= 2.8.19.14
+types-python-dateutil >= 2.9.0.20241206
 mypy >= 1.14.1