diff --git a/.generator/schemas/v1/openapi.yaml b/.generator/schemas/v1/openapi.yaml
index 0e64921915..bf2effce63 100644
--- a/.generator/schemas/v1/openapi.yaml
+++ b/.generator/schemas/v1/openapi.yaml
@@ -25943,8 +25943,8 @@ components:
       description: Used for fixed span times, such as 'March 1 to March 7'.
       properties:
         from:
-          description: Start time in seconds since epoch.
-          example: 1712080128
+          description: Start time in milliseconds since epoch.
+          example: 1712080128000
           format: int64
           minimum: 0
           type: integer
@@ -25952,8 +25952,8 @@ components:
           description: Whether to hide incomplete cost data in the widget.
           type: boolean
         to:
-          description: End time in seconds since epoch.
-          example: 1712083128
+          description: End time in milliseconds since epoch.
+          example: 1712083128000
           format: int64
           minimum: 0
           type: integer
diff --git a/src/datadog_api_client/v1/model/widget_new_fixed_span.py b/src/datadog_api_client/v1/model/widget_new_fixed_span.py
index 9e70e66d78..ddfb2b2f75 100644
--- a/src/datadog_api_client/v1/model/widget_new_fixed_span.py
+++ b/src/datadog_api_client/v1/model/widget_new_fixed_span.py
@@ -56,13 +56,13 @@ def __init__(
         """
         Used for fixed span times, such as 'March 1 to March 7'.
 
-        :param _from: Start time in seconds since epoch.
+        :param _from: Start time in milliseconds since epoch.
         :type _from: int
 
         :param hide_incomplete_cost_data: Whether to hide incomplete cost data in the widget.
         :type hide_incomplete_cost_data: bool, optional
 
-        :param to: End time in seconds since epoch.
+        :param to: End time in milliseconds since epoch.
         :type to: int
 
         :param type: Type "fixed" denotes a fixed span.
diff --git a/src/datadog_api_client/v1/model/widget_time.py b/src/datadog_api_client/v1/model/widget_time.py
index 77370a9d62..711cac1bf2 100644
--- a/src/datadog_api_client/v1/model/widget_time.py
+++ b/src/datadog_api_client/v1/model/widget_time.py
@@ -30,10 +30,10 @@ def __init__(self, **kwargs):
         :param value: Value of the time span.
         :type value: int
 
-        :param _from: Start time in seconds since epoch.
+        :param _from: Start time in milliseconds since epoch.
         :type _from: int
 
-        :param to: End time in seconds since epoch.
+        :param to: End time in milliseconds since epoch.
         :type to: int
         """
         super().__init__(kwargs)