diff --git a/app/requirements-dev.txt b/app/requirements-dev.txt
index 4d650b5..6acbafe 100644
--- a/app/requirements-dev.txt
+++ b/app/requirements-dev.txt
@@ -41,5 +41,5 @@ pytest-django==4.14.0
 pytest-testmon==2.2.0
 mypy==2.4.0
 django-stubs==6.1.2
-types-python-dateutil==2.9.0.20260807
+types-python-dateutil==2.9.0.20261021
 types-Markdown==3.10.2.20261007