diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c15b7dc..18d2257c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## Release (2025-XX-XX)
+- `authorization`: [v0.5.0](services/authorization/CHANGELOG.md#v050)
+  - Add new `etag` attribute to `Role` model class
+
 ## Release (2025-11-14)
 - `cdn`: 
   - [v2.1.0](services/cdn/CHANGELOG.md#v210)
diff --git a/services/authorization/CHANGELOG.md b/services/authorization/CHANGELOG.md
index 46b0bfe1..acf88fa2 100644
--- a/services/authorization/CHANGELOG.md
+++ b/services/authorization/CHANGELOG.md
@@ -1,3 +1,6 @@
+## v0.5.0
+- Add new `etag` attribute to `Role` model class
+
 ## v0.4.1
 - **Bugfix:** Prevent year 0 timestamp issue
 
diff --git a/services/authorization/pyproject.toml b/services/authorization/pyproject.toml
index 6b8e60b8..6eba9656 100644
--- a/services/authorization/pyproject.toml
+++ b/services/authorization/pyproject.toml
@@ -3,7 +3,7 @@ name = "stackit-authorization"
 
 [tool.poetry]
 name = "stackit-authorization"
-version = "v0.4.1"
+version = "v0.5.0"
 authors = [
     "STACKIT Developer Tools <developer-tools@stackit.cloud>",
 ]
diff --git a/services/authorization/src/stackit/authorization/models/role.py b/services/authorization/src/stackit/authorization/models/role.py
index 17bcdda8..5014984d 100644
--- a/services/authorization/src/stackit/authorization/models/role.py
+++ b/services/authorization/src/stackit/authorization/models/role.py
@@ -18,7 +18,7 @@
 import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
-from pydantic import BaseModel, ConfigDict, Field, field_validator
+from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
 from typing_extensions import Annotated, Self
 
 from stackit.authorization.models.permission import Permission
@@ -30,10 +30,11 @@ class Role(BaseModel):
     """  # noqa: E501
 
     description: Annotated[str, Field(strict=True, max_length=255)]
+    etag: Optional[StrictStr] = None
     id: Optional[Annotated[str, Field(strict=True)]] = None
     name: Annotated[str, Field(strict=True)]
     permissions: List[Permission]
-    __properties: ClassVar[List[str]] = ["description", "id", "name", "permissions"]
+    __properties: ClassVar[List[str]] = ["description", "etag", "id", "name", "permissions"]
 
     @field_validator("id")
     def id_validate_regular_expression(cls, value):
@@ -110,6 +111,7 @@ def from_dict(cls, obj: Optional[Dict[str, Any]]) -> Optional[Self]:
         _obj = cls.model_validate(
             {
                 "description": obj.get("description"),
+                "etag": obj.get("etag"),
                 "id": obj.get("id"),
                 "name": obj.get("name"),
                 "permissions": (