diff --git a/test-requirements.txt b/test-requirements.txt
index ae82fe5..bb1f420 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,5 +2,5 @@ pytest >= 8.3.5
 pytest-cov >= 2.8.1
 tox >= 3.9.0
 flake8 >= 4.0.0
-types-python-dateutil >= 2.8.19.14
+types-python-dateutil >= 2.9.0.20241206
 mypy >= 1.5