diff --git a/libs/langchain_v1/langchain/__init__.py b/libs/langchain_v1/langchain/__init__.py
index 7be32be5ba2..2e1d515f810 100644
--- a/libs/langchain_v1/langchain/__init__.py
+++ b/libs/langchain_v1/langchain/__init__.py
@@ -1,3 +1,3 @@
 """Main entrypoint into LangChain."""
 
-__version__ = "1.0.0a12"
+__version__ = "1.0.0a13"
diff --git a/libs/langchain_v1/pyproject.toml b/libs/langchain_v1/pyproject.toml
index a4a2ee01a91..539bdce9194 100644
--- a/libs/langchain_v1/pyproject.toml
+++ b/libs/langchain_v1/pyproject.toml
@@ -13,7 +13,7 @@ dependencies = [
 ]
 
 name = "langchain"
-version = "1.0.0a12"
+version = "1.0.0a13"
 description = "Building applications with LLMs through composability"
 readme = "README.md"
 
diff --git a/libs/langchain_v1/uv.lock b/libs/langchain_v1/uv.lock
index 0242907e69f..42303b68b6f 100644
--- a/libs/langchain_v1/uv.lock
+++ b/libs/langchain_v1/uv.lock
@@ -1550,7 +1550,7 @@ wheels = [
 
 [[package]]
 name = "langchain"
-version = "1.0.0a12"
+version = "1.0.0a13"
 source = { editable = "." }
 dependencies = [
     { name = "langchain-core" },