diff --git a/pyproject.toml b/pyproject.toml
index 1ae956b..33fcaff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,4 +39,4 @@ pytest-cov = "^4.0.0"
 
 [build-system]
 requires = ["poetry-core"]
-build-backend = "poetry.masonry.api"
+build-backend = "poetry.core.masonry.api"