diff --git a/samples/google-ADK-agent/uv.lock b/samples/google-ADK-agent/uv.lock
index c3217c1cb..9d2bdfc3a 100644
--- a/samples/google-ADK-agent/uv.lock
+++ b/samples/google-ADK-agent/uv.lock
@@ -164,14 +164,14 @@ wheels = [
 
 [[package]]
 name = "authlib"
-version = "1.6.0"
+version = "1.6.6"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "cryptography" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/a2/9d/b1e08d36899c12c8b894a44a5583ee157789f26fc4b176f8e4b6217b56e1/authlib-1.6.0.tar.gz", hash = "sha256:4367d32031b7af175ad3a323d571dc7257b7099d55978087ceae4a0d88cd3210", size = 158371, upload-time = "2025-05-23T00:21:45.011Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/bb/9b/b1661026ff24bc641b76b78c5222d614776b0c085bcfdac9bd15a1cb4b35/authlib-1.6.6.tar.gz", hash = "sha256:45770e8e056d0f283451d9996fbb59b70d45722b45d854d58f32878d0a40c38e", size = 164894, upload-time = "2025-12-12T08:01:41.464Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/84/29/587c189bbab1ccc8c86a03a5d0e13873df916380ef1be461ebe6acebf48d/authlib-1.6.0-py2.py3-none-any.whl", hash = "sha256:91685589498f79e8655e8a8947431ad6288831d643f11c55c2143ffcc738048d", size = 239981, upload-time = "2025-05-23T00:21:43.075Z" },
+    { url = "https://files.pythonhosted.org/packages/54/51/321e821856452f7386c4e9df866f196720b1ad0c5ea1623ea7399969ae3b/authlib-1.6.6-py2.py3-none-any.whl", hash = "sha256:7d9e9bc535c13974313a87f53e8430eb6ea3d1cf6ae4f6efcd793f2e949143fd", size = 244005, upload-time = "2025-12-12T08:01:40.209Z" },
 ]
 
 [[package]]