diff --git a/libs/langchain/poetry.lock b/libs/langchain/poetry.lock
index 617be20d8352e..b74085c071bac 100644
--- a/libs/langchain/poetry.lock
+++ b/libs/langchain/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.6.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
 
 [[package]]
 name = "aiohappyeyeballs"
@@ -1988,7 +1988,7 @@ files = [
 
 [[package]]
 name = "langchain-core"
-version = "0.3.19"
+version = "0.3.21"
 description = "Building applications with LLMs through composability"
 optional = false
 python-versions = ">=3.9,<4.0"
@@ -2013,7 +2013,7 @@ url = "../core"
 
 [[package]]
 name = "langchain-openai"
-version = "0.2.8"
+version = "0.2.9"
 description = "An integration package connecting OpenAI and LangChain"
 optional = true
 python-versions = ">=3.9,<4.0"
@@ -2031,7 +2031,7 @@ url = "../partners/openai"
 
 [[package]]
 name = "langchain-tests"
-version = "0.3.1"
+version = "0.3.4"
 description = "Standard tests for LangChain implementations"
 optional = false
 python-versions = ">=3.9,<4.0"
@@ -2040,7 +2040,7 @@ develop = true
 
 [package.dependencies]
 httpx = "^0.27.0"
-langchain-core = "^0.3.15"
+langchain-core = "^0.3.19"
 pytest = ">=7,<9"
 syrupy = "^4"
 
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@@ -4908,4 +4897,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9,<4.0"
-content-hash = "e0b37255a15bdc97b4f164a1c0af09bc89b812aebff988e0ff9728038a09a4b3"
+content-hash = "7437aea710de404325d497f9b9275234b1f7fefd38aa27649897a48dccd55317"
diff --git a/libs/langchain/pyproject.toml b/libs/langchain/pyproject.toml
index cab42740df9b6..ae54e79129cf4 100644
--- a/libs/langchain/pyproject.toml
+++ b/libs/langchain/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "langchain"
-version = "0.3.7"
+version = "0.3.8"
 description = "Building applications with LLMs through composability"
 authors = []
 license = "MIT"
@@ -33,7 +33,7 @@ langchain-server = "langchain.server:main"
 
 [tool.poetry.dependencies]
 python = ">=3.9,<4.0"
-langchain-core = "^0.3.15"
+langchain-core = "^0.3.21"
 langchain-text-splitters = "^0.3.0"
 langsmith = "^0.1.17"
 pydantic = "^2.7.4"