diff --git a/pyproject.toml b/pyproject.toml
index cd4366d01..0547d3729 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,7 +51,7 @@ dev = [
     "mypy~=1.18.0",
     "ruff~=0.14.5",
     "types-setuptools~=80.9.0.20250822",
-    "types-Authlib~=1.6.5.20251005",
+    "types-Authlib>=1.6.5.20251005,<1.6.7.0",
     "pytest~=8.4.2",
     "pytest-vcr~=1.0.2",
     "vcrpy~=7.0.0",