diff --git a/libs/cli/js-examples/package.json b/libs/cli/js-examples/package.json
index 9ea0bb4fb..298cb5aac 100644
--- a/libs/cli/js-examples/package.json
+++ b/libs/cli/js-examples/package.json
@@ -36,7 +36,7 @@
     "@types/jest": "^30.0.0",
     "@typescript-eslint/eslint-plugin": "^8.68.0",
     "@typescript-eslint/parser": "^8.68.0",
-    "dotenv": "^17.4.2",
+    "dotenv": "^18.0.4",
     "eslint": "^10.9.1",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-import": "^2.32.0",
diff --git a/libs/cli/js-examples/yarn.lock b/libs/cli/js-examples/yarn.lock
index d6fbf57f5..f577a8961 100644
--- a/libs/cli/js-examples/yarn.lock
+++ b/libs/cli/js-examples/yarn.lock
@@ -2072,10 +2072,10 @@ doctrine@^2.1.0:
   dependencies:
     esutils "^2.0.2"
 
-dotenv@^17.4.2:
-  version "17.4.2"
-  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-17.4.2.tgz#c07e54a746e11eba021dd9e1047ced5afdc1c034"
-  integrity sha512-nI4U3TottKAcAD9LLud4Cb7b2QztQMUEfHbvhTH09bqXTxnSie8WnjPALV/WMCrJZ6UV/qHJ6L03OqO3LcdYZw==
+dotenv@^18.0.4:
+  version "18.0.4"
+  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-18.0.4.tgz#419bbe784f30915bfeb10e2d407e13ca5528504f"
+  integrity sha512-jGt9uI5BIxpVO15kvy+iEFqNAwxYClKWnkptLjSNPnFLC003Imd0ofr3aEVsbpHdSBdSsbcApNIlz4nbyGMwdA==
 
 dunder-proto@^1.0.0, dunder-proto@^1.0.1:
   version "1.0.1"
diff --git a/libs/sdk-py/tests/streaming/test_lifecycle_namespace.py b/libs/sdk-py/tests/streaming/test_lifecycle_namespace.py
new file mode 100644
index 000000000..e22bb51f6
--- /dev/null
+++ b/libs/sdk-py/tests/streaming/test_lifecycle_namespace.py
@@ -0,0 +1,67 @@
+"""Child lifecycle completion must not finish the parent thread's output."""
+
+from __future__ import annotations
+
+import asyncio
+from typing import cast
+
+import httpx
+import pytest
+from langchain_protocol import Event
+
+from langgraph_sdk._async.http import HttpClient
+from langgraph_sdk._async.threads import ThreadsClient
+from langgraph_sdk._sync.http import SyncHttpClient
+from langgraph_sdk._sync.stream import _BlockingResult
+from langgraph_sdk._sync.threads import SyncThreadsClient
+from streaming._events import input_requested_event, lifecycle_event
+
+
+@pytest.mark.parametrize("phase", ["completed", "failed"])
+async def test_async_child_terminal_does_not_finish_root(phase):
+    async with httpx.AsyncClient(base_url="http://test") as raw:
+        thread = ThreadsClient(HttpClient(raw)).stream(
+            thread_id="t-1", assistant_id="agent"
+        )
+        thread._run_done = asyncio.get_running_loop().create_future()
+        await thread._apply_lifecycle_event(
+            cast(Event, input_requested_event(namespace=["sub:1"]))
+        )
+        await thread._apply_lifecycle_event(
+            cast(Event, lifecycle_event(namespace=["sub:1"], event=phase))
+        )
+        assert not thread._run_done.done()
+        assert thread.interrupted
+        assert thread.interrupts[0]["namespace"] == ["sub:1"]
+
+        await thread._apply_lifecycle_event(
+            cast(Event, lifecycle_event(event="completed"))
+        )
+        assert thread._run_done.done()
+        assert (await thread._run_done).error is None
+        assert not thread.interrupted
+        assert thread.interrupts == []
+
+
+@pytest.mark.parametrize("phase", ["completed", "failed"])
+def test_sync_child_terminal_does_not_finish_root(phase):
+    with httpx.Client(base_url="http://test") as raw:
+        thread = SyncThreadsClient(SyncHttpClient(raw)).stream(
+            thread_id="t-1", assistant_id="agent"
+        )
+        thread._run_done = _BlockingResult()
+        thread._apply_lifecycle_event(
+            cast(Event, input_requested_event(namespace=["sub:1"]))
+        )
+        thread._apply_lifecycle_event(
+            cast(Event, lifecycle_event(namespace=["sub:1"], event=phase))
+        )
+        assert not thread._run_done.done()
+        assert thread.interrupted
+        assert thread.interrupts[0]["namespace"] == ["sub:1"]
+
+        thread._apply_lifecycle_event(cast(Event, lifecycle_event(event="completed")))
+        assert thread._run_done.done()
+        assert thread._run_done.result().error is None
+        assert not thread.interrupted
+        assert thread.interrupts == []