diff --git a/pyproject.toml b/pyproject.toml
index a71d6c6af..cefb43ef8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -220,5 +220,5 @@ testpaths = ["tests",]
 norecursedirs = [".*", "*.egg", "build", "dist",]
 
 [build-system]
-requires = ["poetry-core>=1.0.0", "mypy>=0.910", "setuptools>=58.1.0", "orjson>=3.6.4"]
+requires = ["poetry-core>=1.1.0a6", "mypy>=0.910", "setuptools>=58.1.0", "orjson>=3.6.4"]
 build-backend = "poetry.core.masonry.api"