diff --git a/requirements-dev.txt b/requirements-dev.txt
index e7112a4f4..138b42a93 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -29,4 +29,4 @@ types-cachetools==6.2.0.20250827
 types-filelock==3.2.7
 types-requests==2.32.4.20250913
 types-tabulate==0.9.0.20241207
-types-python-dateutil==2.9.0.20250822
+types-python-dateutil==2.9.0.20251008