diff --git a/requirements_dev.txt b/requirements_dev.txt
index ba301a25..8bd387ae 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -12,7 +12,7 @@ python-dateutil==2.9.0.post0
 freezegun==1.5.5
 pydantic==2.12.5
 pytest-benchmark==5.2.3
-types-python-dateutil==2.9.0.20251008
+types-python-dateutil==2.9.0.20251115
 wheel==0.46.1
 PyYAML==6.0.3
 types-PyYAML==6.0.12.20250915