diff --git a/libs/langchain_v1/uv.lock b/libs/langchain_v1/uv.lock
index 8bf621f489a..9c8738e3d4b 100644
--- a/libs/langchain_v1/uv.lock
+++ b/libs/langchain_v1/uv.lock
@@ -2592,7 +2592,7 @@ wheels = [
 
 [[package]]
 name = "langsmith"
-version = "0.4.42"
+version = "0.6.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "httpx" },
@@ -2601,11 +2601,12 @@ dependencies = [
     { name = "pydantic" },
     { name = "requests" },
     { name = "requests-toolbelt" },
+    { name = "uuid-utils" },
     { name = "zstandard" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/c8/91/939cb2fa0317a8aedd0b4dab6c189722e5ef15abcf65304dc929e582826a/langsmith-0.4.42.tar.gz", hash = "sha256:a6e808e47581403cb019b47c8c10627c1644f78ed4c03fa877d6ad661476c38f", size = 953877, upload-time = "2025-11-09T16:31:21.503Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/da/02/ac91c812238cd232ff3270c253eea31b28253fdeb28df61571932cb26e88/langsmith-0.6.3.tar.gz", hash = "sha256:33246769c0bb24e2c17e0c34bb21931084437613cd37faf83bd0978a297b826f", size = 1739709, upload-time = "2026-01-14T19:26:23.529Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/0f/17/4280bc381b40a642ea5efe1bab0237f03507a9d4281484c5baa1db82055a/langsmith-0.4.42-py3-none-any.whl", hash = "sha256:015b0a0c17eb1a61293e8cbb7d41778a4b37caddd267d54274ba94e4721b301b", size = 401937, upload-time = "2025-11-09T16:31:19.163Z" },
+    { url = "https://files.pythonhosted.org/packages/ff/11/22a56b615f1ca84f65fda68b1a53b6e2765f2bdb1c6d885793430a664bfe/langsmith-0.6.3-py3-none-any.whl", hash = "sha256:44fdf8084165513e6bede9dda715e7b460b1b3f57ac69f2ca3f03afa911233ec", size = 282991, upload-time = "2026-01-14T19:26:21.882Z" },
 ]
 
 [[package]]