diff --git a/pyproject.toml b/pyproject.toml
index 87582e5..83025ca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ ruff = "^0.7.3"
 types-oauthlib = "^3.2.0"
 
 [build-system]
-requires = ["poetry-core>=1.0.0"]
+requires = ["poetry-core>=1.9.1"]
 build-backend = "poetry.core.masonry.api"
 
 [tool.ruff.lint]