diff --git a/libs/langgraph/langgraph/pregel/loop.py b/libs/langgraph/langgraph/pregel/loop.py
index 537929aa4..4dccb6429 100644
--- a/libs/langgraph/langgraph/pregel/loop.py
+++ b/libs/langgraph/langgraph/pregel/loop.py
@@ -341,8 +341,10 @@ class PregelLoop:
                     k: v
                     for k, v in channel_versions.items()
                     if k not in self.checkpoint_previous_versions
-                    or k in self.checkpoint_previous_versions
-                    and v > self.checkpoint_previous_versions[k]
+                    or (
+                        k in self.checkpoint_previous_versions
+                        and v > self.checkpoint_previous_versions[k]
+                    )
                 }
             else:
                 new_versions = channel_versions
diff --git a/libs/langgraph/tests/test_pregel.py b/libs/langgraph/tests/test_pregel.py
index e025efac0..55e6ad976 100644
--- a/libs/langgraph/tests/test_pregel.py
+++ b/libs/langgraph/tests/test_pregel.py
@@ -7452,12 +7452,20 @@ def test_simple_multi_edge(snapshot: SnapshotAssertion) -> None:
 
     assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
     assert app.invoke({"my_key": "my_value"}) == {"my_key": "my_value_more"}
-    assert [*app.stream({"my_key": "my_value"})] == [
-        {"up": None},
-        {"side": None},
-        {"other": {"my_key": "_more"}},
-        {"down": None},
-    ]
+    assert [*app.stream({"my_key": "my_value"})] in (
+        [
+            {"up": None},
+            {"side": None},
+            {"other": {"my_key": "_more"}},
+            {"down": None},
+        ],
+        [
+            {"up": None},
+            {"other": {"my_key": "_more"}},
+            {"side": None},
+            {"down": None},
+        ],
+    )
 
 
 def test_nested_graph_xray(snapshot: SnapshotAssertion) -> None:
diff --git a/libs/sdk-js/src/schema.ts b/libs/sdk-js/src/schema.ts
index 69cb069f7..897ed1ed8 100644
--- a/libs/sdk-js/src/schema.ts
+++ b/libs/sdk-js/src/schema.ts
@@ -27,7 +27,7 @@ export interface Config {
     /**
      * Timestamp of the state checkpoint
      */
-    thread_ts?: string;
+    checkpoint_id?: string;
     [key: string]: unknown;
   };
 }
diff --git a/libs/sdk-py/langgraph_sdk/client.py b/libs/sdk-py/langgraph_sdk/client.py
index b6affc2b3..13d5560db 100644
--- a/libs/sdk-py/langgraph_sdk/client.py
+++ b/libs/sdk-py/langgraph_sdk/client.py
@@ -783,7 +783,8 @@ class ThreadsClient:
                         'configurable':
                             {
                                 'thread_id': 'e2496803-ecd5-4e0c-a779-3226296181c2',
-                                'thread_ts': '1ef4a9b8-e6fb-67b1-8001-abd5184439d1'
+                                'checkpoint_ns': '',
+                                'checkpoint_id': '1ef4a9b8-e6fb-67b1-8001-abd5184439d1'
                             }
                     },
                 'metadata':
@@ -822,7 +823,8 @@ class ThreadsClient:
                         'configurable':
                             {
                                 'thread_id': 'e2496803-ecd5-4e0c-a779-3226296181c2',
-                                'thread_ts': '1ef4a9b8-d80d-6fa7-8000-9300467fad0f'
+                                'checkpoint_ns': '',
+                                'checkpoint_id': '1ef4a9b8-d80d-6fa7-8000-9300467fad0f'
                             }
                     }
             }
@@ -1184,7 +1186,7 @@ class RunsClient:
                                         'user_id': None,
                                         'graph_id': 'agent',
                                         'thread_id': 'my_thread_id',
-                                        'thread_ts': None,
+                                        'checkpoint_id': None,
                                         'model_name': "openai",
                                         'assistant_id': 'my_assistant_id'
                                     }