diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000000..5e862a9593
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["pbr>=6.0.0", "setuptools>=64.0.0"]
+build-backend = "pbr.build"
diff --git a/requirements.txt b/requirements.txt
index 4a39a3cc2b..93edec6d5b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # you find any incorrect lower bounds, let us know or propose a fix.
 
 alembic>=1.8.0
-pbr!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=6.0.0 # Apache-2.0
 eventlet>=0.27.0 # MIT
 SQLAlchemy>=1.4.0 # MIT
 keystonemiddleware>=4.17.0 # Apache-2.0
diff --git a/setup.py b/setup.py
index cd35c3c35b..0be93a5f6e 100644
--- a/setup.py
+++ b/setup.py
@@ -15,6 +15,4 @@
 
 import setuptools
 
-setuptools.setup(
-    setup_requires=['pbr>=2.0.0'],
-    pbr=True)
+setuptools.setup(pbr=True)