From f95d2309f91e1ba0e6fcd2873babe600e1d8198f Mon Sep 17 00:00:00 2001
From: Sydney Runkle <54324534+sydney-runkle@users.noreply.github.com>
Date: Wed, 29 Apr 2026 18:00:47 -0400
Subject: [PATCH] release(checkpoint-postgres): pin to checkpoint 4.1.0a1
 (#7648)
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## Summary
- Bumps `langgraph-checkpoint-postgres`'s pin on `langgraph-checkpoint`
from `>=4.0.3,<5.0.0` to `>=4.1.0a1,<5.0.0` so the postgres alpha
(3.1.0a1) requires the matching checkpoint alpha released in #7647.
- Mirrors the same pin update applied to `langgraph` (1.2.0a1) on
`wfh/releases/timers`.

## Why
The three alphas (checkpoint 4.1.0a1, checkpoint-postgres 3.1.0a1,
langgraph 1.2.0a1) are meant to be tested as a coherent set. `langgraph`
already pins `>=4.1.0a1`; checkpoint-postgres was missed in that release
and is still letting resolvers fall back to 4.0.x.

## Test plan
- [ ] CI green
- [ ] `uv lock` resolves cleanly across libs (verified locally via `make
lock` — no lock file changes since editable paths already resolved to
4.1.0a1)
---
 libs/checkpoint-postgres/pyproject.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/checkpoint-postgres/pyproject.toml b/libs/checkpoint-postgres/pyproject.toml
index c8c16e83d..ef2b7868b 100644
--- a/libs/checkpoint-postgres/pyproject.toml
+++ b/libs/checkpoint-postgres/pyproject.toml
@@ -12,7 +12,7 @@ readme = "README.md"
 license = "MIT"
 license-files = ['LICENSE']
 dependencies = [
-  "langgraph-checkpoint>=4.0.3,<5.0.0",
+  "langgraph-checkpoint>=4.1.0a1,<5.0.0",
   "orjson>=3.11.5",
   "psycopg>=3.2.0",
   "psycopg-pool>=3.2.0",