1diff --git a/pyproject.toml b/pyproject.toml 2index 2c93a39..6c800e2 100644 3--- a/pyproject.toml 4+++ b/pyproject.toml 5@@ -24,3 +24,7 @@ isort = "^4.3" 6 7 [tool.black] 8 line-length = 120 9+ 10+[build-system] 11+requires = ["poetry_core>=1.0.0"] 12+build-backend = "poetry.core.masonry.api"