diff --git a/agentplatform/agent_engines/templates/adk.py b/agentplatform/agent_engines/templates/adk.py
index 91737e688a..115351c8bc 100644
--- a/agentplatform/agent_engines/templates/adk.py
+++ b/agentplatform/agent_engines/templates/adk.py
@@ -1616,6 +1616,10 @@ async def async_create_session(
                 will be be generated for the session.
             state (dict[str, Any]):
                 Optional. The initial state of the session.
+            ttl (str):
+                Optional. The time-to-live for the session.
+            expire_time (str):
+                Optional. The expiration time for the session.
             **kwargs (dict[str, Any]):
                 Optional. Additional keyword arguments to pass to the
                 session service.
diff --git a/tests/unit/agentplatform/frameworks/test_frameworks_adk.py b/tests/unit/agentplatform/frameworks/test_frameworks_adk.py
index 6da7d41409..7e3d5dba6f 100644
--- a/tests/unit/agentplatform/frameworks/test_frameworks_adk.py
+++ b/tests/unit/agentplatform/frameworks/test_frameworks_adk.py
@@ -41,6 +41,7 @@
 )
 from google.genai import types
 import pytest
+from google.adk.sessions.base_session_service import BaseSessionService
 
 
 try:
@@ -701,6 +702,50 @@ async def test_async_create_session(self, get_project_id_mock: mock.Mock):
         assert session2["user_id"] == _TEST_USER_ID
         assert session2["id"] == "test_session_id"
 
+    @pytest.mark.asyncio
+    async def test_async_create_session_with_ttl_kwargs(
+        self, get_project_id_mock: mock.Mock
+    ):
+        mock_session_service = mock.Mock(spec=BaseSessionService)
+        mock_session_service.create_session = mock.AsyncMock()
+        app = adk_template.AdkApp(
+            agent=_TEST_AGENT,
+            session_service_builder=lambda: mock_session_service,
+        )
+        await app.async_create_session(
+            user_id=_TEST_USER_ID,
+            ttl="7200s",
+        )
+        mock_session_service.create_session.assert_called_once_with(
+            app_name=app._app_name(),
+            user_id=_TEST_USER_ID,
+            session_id=None,
+            state=None,
+            ttl="7200s",
+        )
+
+    @pytest.mark.asyncio
+    async def test_async_create_session_with_expire_time_kwargs(
+        self, get_project_id_mock: mock.Mock
+    ):
+        mock_session_service = mock.Mock(spec=BaseSessionService)
+        mock_session_service.create_session = mock.AsyncMock()
+        app = adk_template.AdkApp(
+            agent=_TEST_AGENT,
+            session_service_builder=lambda: mock_session_service,
+        )
+        await app.async_create_session(
+            user_id=_TEST_USER_ID,
+            expire_time="2026-03-01T00:00:00Z",
+        )
+        mock_session_service.create_session.assert_called_once_with(
+            app_name=app._app_name(),
+            user_id=_TEST_USER_ID,
+            session_id=None,
+            state=None,
+            expire_time="2026-03-01T00:00:00Z",
+        )
+
     @pytest.mark.asyncio
     async def test_async_get_session(self, get_project_id_mock: mock.Mock):
         app = adk_template.AdkApp(agent=_TEST_AGENT)
diff --git a/tests/unit/vertex_adk/test_agent_engine_templates_adk.py b/tests/unit/vertex_adk/test_agent_engine_templates_adk.py
index 2e80315044..044852b575 100644
--- a/tests/unit/vertex_adk/test_agent_engine_templates_adk.py
+++ b/tests/unit/vertex_adk/test_agent_engine_templates_adk.py
@@ -40,6 +40,7 @@
 from vertexai.agent_engines.templates import adk as adk_template
 from google.genai import types
 import pytest
+from google.adk.sessions.base_session_service import BaseSessionService
 
 
 try:
@@ -620,6 +621,51 @@ async def test_async_create_session(self, get_project_id_mock: mock.Mock):
         assert session2["user_id"] == _TEST_USER_ID
         assert session2["id"] == "test_session_id"
 
+    @pytest.mark.asyncio
+    async def test_async_create_session_with_ttl_kwargs(
+        self, get_project_id_mock: mock.Mock
+    ):
+        mock_session_service = mock.Mock(spec=BaseSessionService)
+        mock_session_service.create_session = mock.AsyncMock()
+        app = agent_engines.AdkApp(
+            agent=_TEST_AGENT,
+            session_service_builder=lambda: mock_session_service,
+        )
+        await app.async_create_session(
+            user_id=_TEST_USER_ID,
+            ttl="7200s",
+        )
+        mock_session_service.create_session.assert_called_once_with(
+            app_name=app._app_name(),
+            user_id=_TEST_USER_ID,
+            session_id=None,
+            state=None,
+            ttl="7200s",
+        )
+
+    @pytest.mark.asyncio
+    async def test_async_create_session_with_expire_time_kwargs(
+        self, get_project_id_mock: mock.Mock
+    ):
+        mock_session_service = mock.Mock(spec=BaseSessionService)
+        mock_session_service.create_session = mock.AsyncMock()
+        app = agent_engines.AdkApp(
+            agent=_TEST_AGENT,
+            session_service_builder=lambda: mock_session_service,
+        )
+        await app.async_create_session(
+            user_id=_TEST_USER_ID,
+            expire_time="2026-03-01T00:00:00Z",
+        )
+        mock_session_service.create_session.assert_called_once_with(
+            app_name=app._app_name(),
+            user_id=_TEST_USER_ID,
+            session_id=None,
+            state=None,
+            expire_time="2026-03-01T00:00:00Z",
+        )
+
+
     @pytest.mark.asyncio
     async def test_async_get_session(self, get_project_id_mock: mock.Mock):
         app = agent_engines.AdkApp(agent=_TEST_AGENT)
diff --git a/vertexai/agent_engines/templates/adk.py b/vertexai/agent_engines/templates/adk.py
index 58c3025285..48fcb04ddd 100644
--- a/vertexai/agent_engines/templates/adk.py
+++ b/vertexai/agent_engines/templates/adk.py
@@ -1576,6 +1576,10 @@ async def async_create_session(
                 will be be generated for the session.
             state (dict[str, Any]):
                 Optional. The initial state of the session.
+            ttl (str):
+                Optional. The time-to-live for the session.
+            expire_time (str):
+                Optional. The expiration time for the session.
             **kwargs (dict[str, Any]):
                 Optional. Additional keyword arguments to pass to the
                 session service.