diff --git a/dev-python/fastapi/fastapi-0.77.0.ebuild b/dev-python/fastapi/fastapi-0.77.0.ebuild
index 021c16b63..ecfe1f750 100644
--- a/dev-python/fastapi/fastapi-0.77.0.ebuild
+++ b/dev-python/fastapi/fastapi-0.77.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=7
 
-DISTUTILS_USE_SETUPTOOLS=pyproject.toml
+DISTUTILS_USE_PEP517=flit
 PYTHON_COMPAT=( python3_{9..10} )
 #may be not stricly required
 PYTHON_REQ_USE="threads(+)"
diff --git a/dev-python/fastapi/fastapi-0.79.0.ebuild b/dev-python/fastapi/fastapi-0.79.0.ebuild
index 5ae4d9c37..444452989 100644
--- a/dev-python/fastapi/fastapi-0.79.0.ebuild
+++ b/dev-python/fastapi/fastapi-0.79.0.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=7
 
-DISTUTILS_USE_SETUPTOOLS=pyproject.toml
+DISTUTILS_USE_PEP517=flit
 PYTHON_COMPAT=( python3_{9..10} )
 #may be not stricly required
 PYTHON_REQ_USE="threads(+)"