diff --git a/pyproject.toml b/pyproject.toml
index 9cdb819..671dc31 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,5 +76,5 @@ plugins = 'pydantic.mypy'
 strict = true
 
 [build-system]
-requires = ['pdm-pep517>=1.0.5']
-build-backend = 'pdm.pep517.api'
+requires = ['pdm-backend>=1.0.5']
+build-backend = 'pdm.backend'