diff --git a/pyproject.toml b/pyproject.toml
index d7b81c1..63677de 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ dependencies = [
     "alembic>=1.17.1",
     "annotated-types==0.7.0",
     "anyio==4.9.0",
-    "authlib==1.5.2",
+    "authlib==1.6.6",
     "cachetools==5.5.2",
     "certifi==2025.4.26",
     "cffi==1.17.1",
diff --git a/uv.lock b/uv.lock
index 387fc81..685412d 100644
--- a/uv.lock
+++ b/uv.lock
@@ -49,14 +49,14 @@ wheels = [
 
 [[package]]
 name = "authlib"
-version = "1.5.2"
+version = "1.6.6"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "cryptography" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/2a/b3/5f5bc73c6558a21f951ffd267f41c6340d15f5fe0ff4b6bf37694f3558b8/authlib-1.5.2.tar.gz", hash = "sha256:fe85ec7e50c5f86f1e2603518bb3b4f632985eb4a355e52256530790e326c512", size = 153000, upload-time = "2025-04-02T10:31:36.488Z" }
+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/e3/71/8dcec996ea8cc882cec9cace91ae1b630a226b88b0f04ab2ffa778f565ad/authlib-1.5.2-py2.py3-none-any.whl", hash = "sha256:8804dd4402ac5e4a0435ac49e0b6e19e395357cfa632a3f624dcb4f6df13b4b1", size = 232055, upload-time = "2025-04-02T10:31:34.59Z" },
+    { 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]]
@@ -880,7 +880,7 @@ requires-dist = [
     { name = "alembic", specifier = ">=1.17.1" },
     { name = "annotated-types", specifier = "==0.7.0" },
     { name = "anyio", specifier = "==4.9.0" },
-    { name = "authlib", specifier = "==1.5.2" },
+    { name = "authlib", specifier = "==1.6.6" },
     { name = "cachetools", specifier = "==5.5.2" },
     { name = "certifi", specifier = "==2025.4.26" },
     { name = "cffi", specifier = "==1.17.1" },