diff --git a/.apigentools-info b/.apigentools-info
index 85ae025479..435d1e6cf8 100644
--- a/.apigentools-info
+++ b/.apigentools-info
@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-03-06 21:27:59.909956",
-            "spec_repo_commit": "d76a4666"
+            "regenerated": "2024-03-07 14:48:21.110074",
+            "spec_repo_commit": "dbf17f07"
         },
         "v2": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-03-06 21:27:59.934443",
-            "spec_repo_commit": "d76a4666"
+            "regenerated": "2024-03-07 14:48:21.127279",
+            "spec_repo_commit": "dbf17f07"
         }
     }
 }
\ No newline at end of file
diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index 9d84bc7546..4593428f90 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -6114,7 +6114,7 @@ components:
           type: string
       type: object
     DowntimeScheduleOneTimeCreateUpdateRequest:
-      additionalProperties: {}
+      additionalProperties: false
       description: A one-time downtime definition.
       properties:
         end:
@@ -6249,6 +6249,7 @@ components:
       - recurrences
       type: object
     DowntimeScheduleRecurrencesUpdateRequest:
+      additionalProperties: false
       description: A recurring downtime schedule definition.
       properties:
         recurrences:
diff --git a/src/datadog_api_client/v2/model/downtime_schedule_one_time_create_update_request.py b/src/datadog_api_client/v2/model/downtime_schedule_one_time_create_update_request.py
index bdcfb5d074..50ac9020e1 100644
--- a/src/datadog_api_client/v2/model/downtime_schedule_one_time_create_update_request.py
+++ b/src/datadog_api_client/v2/model/downtime_schedule_one_time_create_update_request.py
@@ -8,31 +8,14 @@
 from datadog_api_client.model_utils import (
     ModelNormal,
     cached_property,
-    date,
     datetime,
     none_type,
     unset,
     UnsetType,
-    UUID,
 )
 
 
 class DowntimeScheduleOneTimeCreateUpdateRequest(ModelNormal):
-    @cached_property
-    def additional_properties_type(_):
-        return (
-            bool,
-            date,
-            datetime,
-            dict,
-            float,
-            int,
-            list,
-            str,
-            UUID,
-            none_type,
-        )
-
     @cached_property
     def openapi_types(_):
         return {