diff --git a/.apigentools-info b/.apigentools-info
index 0229da83f6..d28740bc1a 100644
--- a/.apigentools-info
+++ b/.apigentools-info
@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.4.1.dev6",
-            "regenerated": "2021-03-23 09:33:16.470820",
-            "spec_repo_commit": "c679afc"
+            "regenerated": "2021-03-23 10:52:34.560111",
+            "spec_repo_commit": "34cf37f"
         },
         "v2": {
             "apigentools_version": "1.4.1.dev6",
-            "regenerated": "2021-03-23 09:33:59.579846",
-            "spec_repo_commit": "c679afc"
+            "regenerated": "2021-03-23 10:53:14.043922",
+            "spec_repo_commit": "34cf37f"
         }
     }
 }
\ No newline at end of file
diff --git a/docs/v1/SyntheticsApi.md b/docs/v1/SyntheticsApi.md
index fa1660c1ae..720cc1854a 100644
--- a/docs/v1/SyntheticsApi.md
+++ b/docs/v1/SyntheticsApi.md
@@ -483,7 +483,7 @@ with ApiClient(configuration) as api_client:
         locations=[
             "locations_example",
         ],
-        message="message_example",
+        message="",
         monitor_id=1,
         name="name_example",
         options=SyntheticsTestOptions(
@@ -2198,7 +2198,7 @@ with ApiClient(configuration) as api_client:
         locations=[
             "locations_example",
         ],
-        message="message_example",
+        message="",
         monitor_id=1,
         name="name_example",
         options=SyntheticsTestOptions(
diff --git a/docs/v1/SyntheticsBrowserTest.md b/docs/v1/SyntheticsBrowserTest.md
index 0d31daa8ed..8756cb5d58 100644
--- a/docs/v1/SyntheticsBrowserTest.md
+++ b/docs/v1/SyntheticsBrowserTest.md
@@ -4,9 +4,9 @@ Object containing details about a Synthetic browser test.
 ## Properties
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
+**message** | **str** | Notification message associated with the test. Message can either be text or an empty string. | 
 **config** | [**SyntheticsBrowserTestConfig**](SyntheticsBrowserTestConfig.md) |  | [optional] 
 **locations** | **[str]** | Array of locations used to run the test. | [optional] 
-**message** | **str** | Notification message associated with the test. | [optional] 
 **monitor_id** | **int** | The associated monitor ID. | [optional] 
 **name** | **str** | Name of the test. | [optional] 
 **options** | [**SyntheticsTestOptions**](SyntheticsTestOptions.md) |  | [optional] 
diff --git a/src/datadog_api_client/v1/model/synthetics_browser_test.py b/src/datadog_api_client/v1/model/synthetics_browser_test.py
index 82b8a40dba..e221aae957 100644
--- a/src/datadog_api_client/v1/model/synthetics_browser_test.py
+++ b/src/datadog_api_client/v1/model/synthetics_browser_test.py
@@ -80,9 +80,9 @@ def openapi_types():
         """
         lazy_import()
         return {
+            "message": (str,),  # noqa: E501
             "config": (SyntheticsBrowserTestConfig,),  # noqa: E501
             "locations": ([str],),  # noqa: E501
-            "message": (str,),  # noqa: E501
             "monitor_id": (int,),  # noqa: E501
             "name": (str,),  # noqa: E501
             "options": (SyntheticsTestOptions,),  # noqa: E501
@@ -98,9 +98,9 @@ def discriminator():
         return None
 
     attribute_map = {
+        "message": "message",  # noqa: E501
         "config": "config",  # noqa: E501
         "locations": "locations",  # noqa: E501
-        "message": "message",  # noqa: E501
         "monitor_id": "monitor_id",  # noqa: E501
         "name": "name",  # noqa: E501
         "options": "options",  # noqa: E501
@@ -125,9 +125,12 @@ def discriminator():
     )
 
     @convert_js_args_to_python_args
-    def __init__(self, *args, **kwargs):  # noqa: E501
+    def __init__(self, message, *args, **kwargs):  # noqa: E501
         """SyntheticsBrowserTest - a model defined in OpenAPI
 
+        Args:
+            message (str): Notification message associated with the test. Message can either be text or an empty string.
+
         Keyword Args:
             _check_type (bool): if True, values for parameters in openapi_types
                                 will be type checked and a TypeError will be
@@ -161,7 +164,6 @@ def __init__(self, *args, **kwargs):  # noqa: E501
                                 _visited_composed_classes = (Animal,)
             config (SyntheticsBrowserTestConfig): [optional]  # noqa: E501
             locations ([str]): Array of locations used to run the test.. [optional]  # noqa: E501
-            message (str): Notification message associated with the test.. [optional]  # noqa: E501
             monitor_id (int): The associated monitor ID.. [optional]  # noqa: E501
             name (str): Name of the test.. [optional]  # noqa: E501
             options (SyntheticsTestOptions): [optional]  # noqa: E501
@@ -196,6 +198,7 @@ def __init__(self, *args, **kwargs):  # noqa: E501
         self._configuration = _configuration
         self._visited_composed_classes = _visited_composed_classes + (self.__class__,)
 
+        self.message = message
         for var_name, var_value in kwargs.items():
             if (
                 var_name not in self.attribute_map
diff --git a/src/datadog_api_client/v1/openapi.yaml b/src/datadog_api_client/v1/openapi.yaml
index 608077d09c..4f5abbb13f 100644
--- a/src/datadog_api_client/v1/openapi.yaml
+++ b/src/datadog_api_client/v1/openapi.yaml
@@ -6747,7 +6747,9 @@ components:
             type: string
           type: array
         message:
-          description: Notification message associated with the test.
+          description: Notification message associated with the test. Message can
+            either be text or an empty string.
+          example: ''
           type: string
         monitor_id:
           description: The associated monitor ID.
@@ -6776,6 +6778,8 @@ components:
           type: array
         type:
           $ref: '#/components/schemas/SyntheticsBrowserTestType'
+      required:
+      - message
       type: object
     SyntheticsBrowserTestConfig:
       description: Configuration object for a Synthetic browser test.