diff --git a/CHANGELOG.md b/CHANGELOG.md
index 350c17fe3..880c8a949 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,9 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Fixed `ml._common.yaml#SearchModelsResponse` and `SearchModelsHitsHit` ([#672](https://github.com/opensearch-project/opensearch-api-specification/pull/672))
 - Fixed `refresh` options to allow `boolean` and `string` ([#673](https://github.com/opensearch-project/opensearch-api-specification/pull/673))
 
+### Changed
+- Changed `tasks._common:TaskInfo` and `tasks._common:TaskGroup` to be composed of a `tasks._common:TaskInfoBase` ([#683](https://github.com/opensearch-project/opensearch-api-specification/pull/683))
+
 ## [0.1.0] - 2024-10-25
 
 ### Added
diff --git a/spec/schemas/tasks._common.yaml b/spec/schemas/tasks._common.yaml
index eed56d652..55502dfeb 100644
--- a/spec/schemas/tasks._common.yaml
+++ b/spec/schemas/tasks._common.yaml
@@ -35,7 +35,7 @@ components:
                 $ref: '#/components/schemas/TaskInfo'
           required:
             - tasks
-    TaskInfo:
+    TaskInfoBase:
       type: object
       properties:
         action:
@@ -76,6 +76,11 @@ components:
         - running_time_in_nanos
         - start_time_in_millis
         - type
+    TaskInfo:
+      allOf:
+        - $ref: '#/components/schemas/TaskInfoBase'
+        - type: object
+          properties: {}
     TaskInfos:
       oneOf:
         - title: grouped_by_none
@@ -88,7 +93,7 @@ components:
             $ref: '#/components/schemas/TaskGroup'
     TaskGroup:
       allOf:
-        - $ref: '#/components/schemas/TaskInfo'
+        - $ref: '#/components/schemas/TaskInfoBase'
         - type: object
           properties:
             children: