diff --git a/services/serverupdate/oas_commit b/services/serverupdate/oas_commit
new file mode 100644
index 00000000..7773db96
--- /dev/null
+++ b/services/serverupdate/oas_commit
@@ -0,0 +1 @@
+334c4e5a85b53d0593ffdca11f450b6c14054f79
diff --git a/services/serverupdate/src/stackit/serverupdate/models/create_update_payload.py b/services/serverupdate/src/stackit/serverupdate/models/create_update_payload.py
index 7a5ef8b2..011869f9 100644
--- a/services/serverupdate/src/stackit/serverupdate/models/create_update_payload.py
+++ b/services/serverupdate/src/stackit/serverupdate/models/create_update_payload.py
@@ -28,7 +28,10 @@ class CreateUpdatePayload(BaseModel):
     """  # noqa: E501
 
     backup_before_update: Optional[StrictBool] = Field(default=None, alias="backupBeforeUpdate")
-    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(alias="maintenanceWindow")
+    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(
+        description="Updates start within the defined hourly window. Depending on the updates, the process may exceed this timeframe and require an automatic restart.",
+        alias="maintenanceWindow",
+    )
     __properties: ClassVar[List[str]] = ["backupBeforeUpdate", "maintenanceWindow"]
 
     model_config = ConfigDict(
diff --git a/services/serverupdate/src/stackit/serverupdate/models/create_update_schedule_payload.py b/services/serverupdate/src/stackit/serverupdate/models/create_update_schedule_payload.py
index d906342e..64f4651c 100644
--- a/services/serverupdate/src/stackit/serverupdate/models/create_update_schedule_payload.py
+++ b/services/serverupdate/src/stackit/serverupdate/models/create_update_schedule_payload.py
@@ -34,9 +34,14 @@ class CreateUpdateSchedulePayload(BaseModel):
     """  # noqa: E501
 
     enabled: StrictBool
-    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(alias="maintenanceWindow")
+    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(
+        description="Updates start within the defined hourly window. Depending on the updates, the process may exceed this timeframe and require an automatic restart.",
+        alias="maintenanceWindow",
+    )
     name: StrictStr
-    rrule: StrictStr
+    rrule: StrictStr = Field(
+        description="An rrule (Recurrence Rule) is a standardized string format used in iCalendar (RFC 5545) to define repeating events, and you can generate one by using a dedicated library or by using online generator tools to specify parameters like frequency, interval, and end dates"
+    )
     __properties: ClassVar[List[str]] = ["enabled", "maintenanceWindow", "name", "rrule"]
 
     model_config = ConfigDict(
diff --git a/services/serverupdate/src/stackit/serverupdate/models/update_policy.py b/services/serverupdate/src/stackit/serverupdate/models/update_policy.py
index d8ba3820..75d93d2a 100644
--- a/services/serverupdate/src/stackit/serverupdate/models/update_policy.py
+++ b/services/serverupdate/src/stackit/serverupdate/models/update_policy.py
@@ -38,9 +38,16 @@ class UpdatePolicy(BaseModel):
     description: Optional[StrictStr] = None
     enabled: Optional[StrictBool] = None
     id: Optional[StrictStr] = None
-    maintenance_window: Optional[StrictInt] = Field(default=None, alias="maintenanceWindow")
+    maintenance_window: Optional[StrictInt] = Field(
+        default=None,
+        description="Updates start within the defined hourly window. Depending on the updates, the process may exceed this timeframe and require an automatic restart.",
+        alias="maintenanceWindow",
+    )
     name: Optional[StrictStr] = None
-    rrule: Optional[StrictStr] = None
+    rrule: Optional[StrictStr] = Field(
+        default=None,
+        description="An rrule (Recurrence Rule) is a standardized string format used in iCalendar (RFC 5545) to define repeating events, and you can generate one by using a dedicated library or by using online generator tools to specify parameters like frequency, interval, and end dates",
+    )
     __properties: ClassVar[List[str]] = [
         "default",
         "description",
diff --git a/services/serverupdate/src/stackit/serverupdate/models/update_schedule.py b/services/serverupdate/src/stackit/serverupdate/models/update_schedule.py
index a70b6cb4..19632b3d 100644
--- a/services/serverupdate/src/stackit/serverupdate/models/update_schedule.py
+++ b/services/serverupdate/src/stackit/serverupdate/models/update_schedule.py
@@ -35,9 +35,14 @@ class UpdateSchedule(BaseModel):
     """  # noqa: E501
 
     enabled: StrictBool
-    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(alias="maintenanceWindow")
+    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(
+        description="Updates start within the defined hourly window. Depending on the updates, the process may exceed this timeframe and require an automatic restart.",
+        alias="maintenanceWindow",
+    )
     name: StrictStr
-    rrule: StrictStr
+    rrule: StrictStr = Field(
+        description="An rrule (Recurrence Rule) is a standardized string format used in iCalendar (RFC 5545) to define repeating events, and you can generate one by using a dedicated library or by using online generator tools to specify parameters like frequency, interval, and end dates"
+    )
     id: StrictInt
     __properties: ClassVar[List[str]] = ["enabled", "maintenanceWindow", "name", "rrule", "id"]
 
diff --git a/services/serverupdate/src/stackit/serverupdate/models/update_schedule_create_request.py b/services/serverupdate/src/stackit/serverupdate/models/update_schedule_create_request.py
index 5235af50..bafba111 100644
--- a/services/serverupdate/src/stackit/serverupdate/models/update_schedule_create_request.py
+++ b/services/serverupdate/src/stackit/serverupdate/models/update_schedule_create_request.py
@@ -34,9 +34,14 @@ class UpdateScheduleCreateRequest(BaseModel):
     """  # noqa: E501
 
     enabled: StrictBool
-    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(alias="maintenanceWindow")
+    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(
+        description="Updates start within the defined hourly window. Depending on the updates, the process may exceed this timeframe and require an automatic restart.",
+        alias="maintenanceWindow",
+    )
     name: StrictStr
-    rrule: StrictStr
+    rrule: StrictStr = Field(
+        description="An rrule (Recurrence Rule) is a standardized string format used in iCalendar (RFC 5545) to define repeating events, and you can generate one by using a dedicated library or by using online generator tools to specify parameters like frequency, interval, and end dates"
+    )
     __properties: ClassVar[List[str]] = ["enabled", "maintenanceWindow", "name", "rrule"]
 
     model_config = ConfigDict(
diff --git a/services/serverupdate/src/stackit/serverupdate/models/update_update_schedule_payload.py b/services/serverupdate/src/stackit/serverupdate/models/update_update_schedule_payload.py
index c05dedd3..1c6f00a7 100644
--- a/services/serverupdate/src/stackit/serverupdate/models/update_update_schedule_payload.py
+++ b/services/serverupdate/src/stackit/serverupdate/models/update_update_schedule_payload.py
@@ -34,9 +34,14 @@ class UpdateUpdateSchedulePayload(BaseModel):
     """  # noqa: E501
 
     enabled: StrictBool
-    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(alias="maintenanceWindow")
+    maintenance_window: Annotated[int, Field(le=24, strict=True, ge=1)] = Field(
+        description="Updates start within the defined hourly window. Depending on the updates, the process may exceed this timeframe and require an automatic restart.",
+        alias="maintenanceWindow",
+    )
     name: StrictStr
-    rrule: StrictStr
+    rrule: StrictStr = Field(
+        description="An rrule (Recurrence Rule) is a standardized string format used in iCalendar (RFC 5545) to define repeating events, and you can generate one by using a dedicated library or by using online generator tools to specify parameters like frequency, interval, and end dates"
+    )
     __properties: ClassVar[List[str]] = ["enabled", "maintenanceWindow", "name", "rrule"]
 
     model_config = ConfigDict(