diff --git a/.apigentools-info b/.apigentools-info
index ea59a137bbe..54858fbc419 100644
--- a/.apigentools-info
+++ b/.apigentools-info
@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.6.4",
-            "regenerated": "2022-10-07 16:18:54.165140",
-            "spec_repo_commit": "1010045c"
+            "regenerated": "2022-10-07 16:37:29.832540",
+            "spec_repo_commit": "9a1ad838"
         },
         "v2": {
             "apigentools_version": "1.6.4",
-            "regenerated": "2022-10-07 16:18:54.182362",
-            "spec_repo_commit": "1010045c"
+            "regenerated": "2022-10-07 16:37:29.848089",
+            "spec_repo_commit": "9a1ad838"
         }
     }
 }
\ No newline at end of file
diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index f6e8179d5aa..6a804e1693f 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -5234,6 +5234,7 @@ components:
         created_at:
           description: The POSIX timestamp of the monitor's creation in nanoseconds.
           example: 1646318692000
+          format: int64
           type: integer
         group_status:
           description: Monitor group status used when there is no `result_groups`.
diff --git a/packages/datadog-api-client-v2/models/MonitorType.ts b/packages/datadog-api-client-v2/models/MonitorType.ts
index 259c054321e..9c23c8f22f7 100644
--- a/packages/datadog-api-client-v2/models/MonitorType.ts
+++ b/packages/datadog-api-client-v2/models/MonitorType.ts
@@ -67,6 +67,7 @@ export class MonitorType {
     createdAt: {
       baseName: "created_at",
       type: "number",
+      format: "int64",
     },
     groupStatus: {
       baseName: "group_status",