diff --git a/backend/uv.lock b/backend/uv.lock
index ad9abc680d..61afaaa01b 100644
--- a/backend/uv.lock
+++ b/backend/uv.lock
@@ -2064,16 +2064,16 @@ wheels = [
 
 [[package]]
 name = "langchain-anthropic"
-version = "1.4.1"
+version = "1.4.6"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "anthropic" },
     { name = "langchain-core" },
     { name = "pydantic" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/ca/19/55e0d3548a4d85ccee630fcfc0979af54ff4ea4f39ab0ed1ed3c6bf25f4e/langchain_anthropic-1.4.1.tar.gz", hash = "sha256:e17d027091438620e35ff2f06aefdfd63c8dcdf6abc606009ddfe3c764f2bc2e", size = 676043, upload-time = "2026-04-17T14:26:17.31Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/e1/f5/cd397b94aeed5fa0e8ab9595b9fb578ac99f424d42220defe6626e6a1a7b/langchain_anthropic-1.4.6.tar.gz", hash = "sha256:78942d4458d883b7d362438a095ed501ed84f44d402622404482481fc973b9da", size = 706540, upload-time = "2026-06-12T16:54:15.352Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/61/0a/20625dfea38a26e8b43654e18cafbc3595e7dc223da80f23d4fa8451dc1d/langchain_anthropic-1.4.1-py3-none-any.whl", hash = "sha256:5a48afbb2b1bad9c46badaccc8e23b0dd7ae07b7583f76bac21ddb3dac831efd", size = 49020, upload-time = "2026-04-17T14:26:15.989Z" },
+    { url = "https://files.pythonhosted.org/packages/26/af/927dbbc5a1f5fea1a69adc2883f034cbd1430004e36f4eacd302d500393a/langchain_anthropic-1.4.6-py3-none-any.whl", hash = "sha256:dbd412a956b6b8b0716d9d8460ef71f834a6731cdbfc59e6160482a4a9fb5200", size = 51797, upload-time = "2026-06-12T16:54:14.159Z" },
 ]
 
 [[package]]