From b026fd605b0cc150f943e6ea8a8aed45e23373e5 Mon Sep 17 00:00:00 2001
From: Mason Daugherty <mason@langchain.dev>
Date: Sun, 15 Feb 2026 02:42:13 -0500
Subject: [PATCH] release(core): 1.2.13 (#35230)

---
 libs/core/langchain_core/version.py | 2 +-
 libs/core/pyproject.toml            | 2 +-
 libs/core/uv.lock                   | 6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/libs/core/langchain_core/version.py b/libs/core/langchain_core/version.py
index 4a7ee9af374..46bac55a95e 100644
--- a/libs/core/langchain_core/version.py
+++ b/libs/core/langchain_core/version.py
@@ -1,3 +1,3 @@
 """langchain-core version information and utilities."""
 
-VERSION = "1.2.12"
+VERSION = "1.2.13"
diff --git a/libs/core/pyproject.toml b/libs/core/pyproject.toml
index 4f6e2b5fc8e..1cf96de1436 100644
--- a/libs/core/pyproject.toml
+++ b/libs/core/pyproject.toml
@@ -21,7 +21,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 
-version = "1.2.12"
+version = "1.2.13"
 requires-python = ">=3.10.0,<4.0.0"
 dependencies = [
     "langsmith>=0.3.45,<1.0.0",
diff --git a/libs/core/uv.lock b/libs/core/uv.lock
index 29e608deae7..83a3408c23b 100644
--- a/libs/core/uv.lock
+++ b/libs/core/uv.lock
@@ -992,7 +992,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.12"
+version = "1.2.13"
 source = { editable = "." }
 dependencies = [
     { name = "jsonpatch" },
@@ -1120,7 +1120,7 @@ requires-dist = [
 ]
 
 [package.metadata.requires-dev]
-lint = [{ name = "ruff", specifier = ">=0.14.11,<0.16.0" }]
+lint = [{ name = "ruff", specifier = ">=0.15.0,<0.16.0" }]
 test = [{ name = "langchain-core", editable = "." }]
 test-integration = []
 typing = [
@@ -1147,7 +1147,7 @@ dev = [
 ]
 lint = [
     { name = "langchain-core", editable = "." },
-    { name = "ruff", specifier = ">=0.14.11,<0.16.0" },
+    { name = "ruff", specifier = ">=0.15.0,<0.16.0" },
 ]
 test = [
     { name = "freezegun", specifier = ">=1.2.2,<2.0.0" },