diff --git a/pyproject.toml b/pyproject.toml
index 94bbca54..98f4b993 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ typing-extensions = ">=4.16.0"
 pytest = ">=9.1.1"
 tox = ">=4.65.0"
 flake8 = ">=7.4.1"
-types-python-dateutil = ">=2.9.0.20260807"
+types-python-dateutil = ">=2.9.0.20261021"
 mypy = "2.4.0"
 virtualenv = ">=21.14.9"