diff --git a/plugins/module_utils/vendor/hcloud/_version.py b/plugins/module_utils/vendor/hcloud/_version.py
index 1a01ca7..d7f9786 100644
--- a/plugins/module_utils/vendor/hcloud/_version.py
+++ b/plugins/module_utils/vendor/hcloud/_version.py
@@ -1,3 +1,3 @@
 from __future__ import annotations
 
-VERSION = "1.30.0"  # x-release-please-version
+VERSION = "1.31.0"  # x-release-please-version
diff --git a/plugins/module_utils/vendor/hcloud/isos/domain.py b/plugins/module_utils/vendor/hcloud/isos/domain.py
index 3a5d814..b2f4d30 100644
--- a/plugins/module_utils/vendor/hcloud/isos/domain.py
+++ b/plugins/module_utils/vendor/hcloud/isos/domain.py
@@ -1,9 +1,7 @@
 from __future__ import annotations
 
-try:
-    from dateutil.parser import isoparse
-except ImportError:
-    isoparse = None
+from datetime import datetime
+from warnings import warn
 
 from ..core import BaseDomain, DomainIdentityMixin
 from ..deprecation import DeprecationInfo
@@ -35,7 +33,6 @@ class Iso(BaseDomain, DomainIdentityMixin):
         "type",
         "architecture",
         "description",
-        "deprecated",
         "deprecation",
     )
 
@@ -46,7 +43,7 @@ class Iso(BaseDomain, DomainIdentityMixin):
         type: str | None = None,
         architecture: str | None = None,
         description: str | None = None,
-        deprecated: str | None = None,
+        deprecated: str | None = None,  # pylint: disable=unused-argument
         deprecation: dict | None = None,
     ):
         self.id = id
@@ -54,7 +51,19 @@ class Iso(BaseDomain, DomainIdentityMixin):
         self.type = type
         self.architecture = architecture
         self.description = description
-        self.deprecated = isoparse(deprecated) if deprecated else None
         self.deprecation = (
             DeprecationInfo.from_dict(deprecation) if deprecation is not None else None
         )
+
+    @property
+    def deprecated(self) -> datetime | None:
+        """
+        ISO 8601 timestamp of deprecation, None if ISO is still available.
+        """
+        warn(
+            "The `deprecated` field is deprecated, please use the `deprecation` field instead.",
+            DeprecationWarning,
+        )
+        if self.deprecation is None:
+            return None
+        return self.deprecation.unavailable_after
diff --git a/scripts/vendor.py b/scripts/vendor.py
index 089c629..b878842 100755
--- a/scripts/vendor.py
+++ b/scripts/vendor.py
@@ -20,7 +20,7 @@ from textwrap import dedent
 logger = logging.getLogger("vendor")
 
 HCLOUD_SOURCE_URL = "https://github.com/hetznercloud/hcloud-python"
-HCLOUD_VERSION = "v1.30.0"
+HCLOUD_VERSION = "v1.31.0"
 HCLOUD_VENDOR_PATH = "plugins/module_utils/vendor/hcloud"