diff --git a/src/a2a/server/agent_execution/agent_executor.py b/src/a2a/server/agent_execution/agent_executor.py
index 38be9c11..62b39db5 100644
--- a/src/a2a/server/agent_execution/agent_executor.py
+++ b/src/a2a/server/agent_execution/agent_executor.py
@@ -42,3 +42,18 @@ async def cancel(
             context: The request context containing the task ID to cancel.
             event_queue: The queue to publish the cancellation status update to.
         """
+
+    @abstractmethod
+    async def resume(
+        self, context: RequestContext, event_queue: EventQueue
+    ) -> None:
+        """Request the agent to resume a canceled task.
+
+        The agent should attempt to resume the task identified by the task_id
+        in the context and publish a `TaskStatusUpdateEvent` with state
+        `TaskState.working` to the `event_queue`.
+
+        Args:
+            context: The request context containing the task ID to resume.
+            event_queue: The queue to publish the working status update to.
+        """
diff --git a/tests/server/request_handlers/test_default_request_handler.py b/tests/server/request_handlers/test_default_request_handler.py
index 6765000c..c7a50b3f 100644
--- a/tests/server/request_handlers/test_default_request_handler.py
+++ b/tests/server/request_handlers/test_default_request_handler.py
@@ -81,6 +81,9 @@ async def _run(self):
     async def cancel(self, context: RequestContext, event_queue: EventQueue):
         pass
 
+    async def resume(self, context: RequestContext, event_queue: EventQueue):
+        pass
+
 
 # Helper to create a simple task for tests
 def create_sample_task(
@@ -793,6 +796,9 @@ async def execute(self, context: RequestContext, event_queue: EventQueue):
     async def cancel(self, context: RequestContext, event_queue: EventQueue):
         pass
 
+    async def resume(self, context: RequestContext, event_queue: EventQueue):
+        pass
+
 
 @pytest.mark.asyncio
 async def test_on_message_send_non_blocking():