diff --git a/libs/core/langchain_core/version.py b/libs/core/langchain_core/version.py
index 7efb0eda007..4a7ee9af374 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 = "1.2.11"
+VERSION = "1.2.12"
diff --git a/libs/core/pyproject.toml b/libs/core/pyproject.toml
index 858e642a7cf..b9ef34091ec 100644
--- a/libs/core/pyproject.toml
+++ b/libs/core/pyproject.toml
@@ -21,7 +21,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 
-version = "1.2.11"
+version = "1.2.12"
 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 052f97ee764..f51bdad992b 100644
--- a/libs/core/uv.lock
+++ b/libs/core/uv.lock
@@ -992,7 +992,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.11"
+version = "1.2.12"
 source = { editable = "." }
 dependencies = [
     { name = "jsonpatch" },