diff --git a/pkgs/development/python-modules/langsmith/default.nix b/pkgs/development/python-modules/langsmith/default.nix
index c6d4eb68507d..81ce98a57948 100644
--- a/pkgs/development/python-modules/langsmith/default.nix
+++ b/pkgs/development/python-modules/langsmith/default.nix
@@ -1,6 +1,5 @@
 {
   lib,
-  stdenv,
   buildPythonPackage,
   fetchFromGitHub,
 
@@ -14,6 +13,7 @@
   requests,
   requests-toolbelt,
   uuid-utils,
+  xxhash,
   zstandard,
 
   # tests
@@ -23,24 +23,25 @@
   multipart,
   opentelemetry-sdk,
   pytest-asyncio,
+  pytest-httpx,
   pytest-socket,
   pytest-vcr,
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "langsmith";
-  version = "0.6.4";
+  version = "0.7.12";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "langchain-ai";
     repo = "langsmith-sdk";
-    tag = "v${version}";
-    hash = "sha256-325A2kEx2UrykxVRzp6WQCPrg92Vy+6R1CfgnCLV2V8=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-5BVQYlp/RMFN1Ja75gz9iFneqkSuoDpqXilHbyEAPdA=";
   };
 
-  sourceRoot = "${src.name}/python";
+  sourceRoot = "${finalAttrs.src.name}/python";
 
   pythonRelaxDeps = [ "orjson" ];
 
@@ -53,6 +54,7 @@ buildPythonPackage rec {
     requests
     requests-toolbelt
     uuid-utils
+    xxhash
     zstandard
   ];
 
@@ -60,9 +62,10 @@ buildPythonPackage rec {
     anthropic
     attrs
     dataclasses-json
+    multipart
     opentelemetry-sdk
     pytest-asyncio
-    multipart
+    pytest-httpx
     pytest-socket
     pytest-vcr
     pytestCheckHook
@@ -93,6 +96,8 @@ buildPythonPackage rec {
     # flaky time comparisons
     # https://github.com/langchain-ai/langsmith-sdk/issues/2245
     "tests/unit_tests/test_uuid_v7.py"
+    # google-adk isn't packaged (and has an enormous number of dependencies)
+    "tests/unit_tests/wrappers/test_google_adk.py"
   ];
 
   pythonImportsCheck = [ "langsmith" ];
@@ -102,7 +107,7 @@ buildPythonPackage rec {
   meta = {
     description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform";
     homepage = "https://github.com/langchain-ai/langsmith-sdk";
-    changelog = "https://github.com/langchain-ai/langsmith-sdk/releases/tag/${src.tag}";
+    changelog = "https://github.com/langchain-ai/langsmith-sdk/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [
       natsukium
@@ -110,4 +115,4 @@ buildPythonPackage rec {
     ];
     mainProgram = "langsmith";
   };
-}
+})