diff --git a/pyproject.toml b/pyproject.toml
index a6ce5de..bd0e1b0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dynamic = ["version"]
 all = [
     "ujson==5.10.0",
     "python-dateutil==2.9.0.post0",
-    "types-python-dateutil==2.9.0.20250708",
+    "types-python-dateutil==2.9.0.20251008",
     "psutil==7.1.0",
 ]
 checksum = [
@@ -34,7 +34,7 @@ checksum = [
 ]
 dateutil = [
     "python-dateutil==2.9.0.post0",
-    "types-python-dateutil==2.9.0.20250708",
+    "types-python-dateutil==2.9.0.20251008",
 ]
 memory = [
     "psutil==7.1.0",