diff --git a/pyproject.toml b/pyproject.toml
index 73f3495..a62b638 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,8 +1,12 @@
 
 [build-system]
-requires = ["poetry-core"]
+requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
 
+[tool.mypy]
+cache_dir = "var/cache/mypy"
+mypy_path = ["src", "tests"]
+
 [tool.poetry]
 name = "poetry-relax"
 version = "0.0.0"