diff --git a/pyproject.toml b/pyproject.toml
index efa98ea..d34823e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,5 +28,5 @@ pdf-stapler = 'staplelib:main'
 
 # this section is for PEP517 compliance. It is technically unnecessary if using Poetry
 [build-system]
-requires = ["poetry>=1.0"]
-build-backend = "poetry.masonry.api"
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"