diff --git a/backend-agent/uv.lock b/backend-agent/uv.lock
index efc117b..741f66c 100644
--- a/backend-agent/uv.lock
+++ b/backend-agent/uv.lock
@@ -2700,7 +2700,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "0.3.76"
+version = "0.3.78"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jsonpatch" },
@@ -2711,9 +2711,9 @@ dependencies = [
     { name = "tenacity" },
     { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/4f/4d/5e2ea7754ee0a1f524c412801c6ba9ad49318ecb58b0d524903c3d9efe0a/langchain_core-0.3.76.tar.gz", hash = "sha256:71136a122dd1abae2c289c5809d035cf12b5f2bb682d8a4c1078cd94feae7419", size = 573568, upload-time = "2025-09-10T14:49:39.863Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/a8/04/0035bd1df8d0fb534afceabe3ba0a87c5af8c5020177650e9aa79aca3495/langchain_core-0.3.78.tar.gz", hash = "sha256:a174a2061f8659b916fd2b1c7d174b3ddd07be7ca45a07aaec442696df5101b6", size = 580473, upload-time = "2025-10-03T16:52:37.025Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/77/b5/501c0ffcb09c734457ceaa86bc7b1dd37b6a261147bd653add03b838aacb/langchain_core-0.3.76-py3-none-any.whl", hash = "sha256:46e0eb48c7ac532432d51f8ca1ece1804c82afe9ae3dcf027b867edadf82b3ec", size = 447508, upload-time = "2025-09-10T14:49:38.179Z" },
+    { url = "https://files.pythonhosted.org/packages/9c/a7/ff35c108c4863c1bb99724a4253ff2324aea5789d689dd59424c07df1199/langchain_core-0.3.78-py3-none-any.whl", hash = "sha256:dafc4f7e9fd008f680bf0ffe5904dbaa45992abdb92627b68eccb7b4089cbbf0", size = 449610, upload-time = "2025-10-03T16:52:35.428Z" },
 ]
 
 [[package]]