From 95af6a00718588e7b7ce17310e8006d267896a77 Mon Sep 17 00:00:00 2001
From: Quanzheng Long <long@langchain.dev>
Date: Thu, 9 Jul 2026 18:25:49 -0700
Subject: [PATCH] release(langgraph): 1.2.9 (#8316)

## Summary

Releases `langgraph` 1.2.9.

Bumps the package version `1.2.8` -> `1.2.9` and propagates it into the
`langgraph`, `prebuilt`, and `sdk-py` lockfiles. No dependency floor or
source changes.

Includes #8315 (fix non-fresh `update_state` delta channel
counters/snapshot metadata for Postgres replay).

## Changes

- Update `libs/langgraph/pyproject.toml` to version `1.2.9`.
- Update the editable `langgraph` package entries in
`libs/langgraph/uv.lock`, `libs/prebuilt/uv.lock`, and
`libs/sdk-py/uv.lock`.


Made with [Cursor](https://cursor.com)

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 libs/langgraph/pyproject.toml | 2 +-
 libs/langgraph/uv.lock        | 2 +-
 libs/prebuilt/uv.lock         | 2 +-
 libs/sdk-py/uv.lock           | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/libs/langgraph/pyproject.toml b/libs/langgraph/pyproject.toml
index 27fffb6af..cc6a99fea 100644
--- a/libs/langgraph/pyproject.toml
+++ b/libs/langgraph/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langgraph"
-version = "1.2.8"
+version = "1.2.9"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 requires-python = ">=3.10"
diff --git a/libs/langgraph/uv.lock b/libs/langgraph/uv.lock
index 0ce11228e..39082a32f 100644
--- a/libs/langgraph/uv.lock
+++ b/libs/langgraph/uv.lock
@@ -1438,7 +1438,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "1.2.8"
+version = "1.2.9"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },
diff --git a/libs/prebuilt/uv.lock b/libs/prebuilt/uv.lock
index 3faab8dd3..6b60317a3 100644
--- a/libs/prebuilt/uv.lock
+++ b/libs/prebuilt/uv.lock
@@ -285,7 +285,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "1.2.8"
+version = "1.2.9"
 source = { editable = "../langgraph" }
 dependencies = [
     { name = "langchain-core" },
diff --git a/libs/sdk-py/uv.lock b/libs/sdk-py/uv.lock
index cf2eb99a7..786728ae4 100644
--- a/libs/sdk-py/uv.lock
+++ b/libs/sdk-py/uv.lock
@@ -298,7 +298,7 @@ wheels = [
 
 [[package]]
 name = "langgraph"
-version = "1.2.8"
+version = "1.2.9"
 source = { editable = "../langgraph" }
 dependencies = [
     { name = "langchain-core" },