diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000000..5e862a9593a
--- /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 afd39c66ae8..3244161df5d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 # Requirements lower bounds listed here are our best effort to keep them up to
 # date but we do not test them so no guarantee of having them all correct. If
 # you find any incorrect lower bounds, let us know or propose a fix.
-pbr>=4.0.0 # Apache-2.0
+pbr>=6.0.0 # Apache-2.0
 
 Paste>=2.0.2 # MIT
 PasteDeploy>=1.5.0 # MIT
diff --git a/zuul.d/base.yaml b/zuul.d/base.yaml
index fd72fb1f973..59a13850899 100644
--- a/zuul.d/base.yaml
+++ b/zuul.d/base.yaml
@@ -24,6 +24,7 @@
       - ^releasenotes/.*$
       - ^setup.cfg$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^vagrant/.*$
       - ^devstack/.*\.sample$
@@ -88,6 +89,7 @@
       - ^doc/.*$
       - ^setup.cfg$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^.*\.conf\.sample$
       - ^.*\.rst$
diff --git a/zuul.d/grenade.yaml b/zuul.d/grenade.yaml
index 5863fc09e1c..5f0e5372648 100644
--- a/zuul.d/grenade.yaml
+++ b/zuul.d/grenade.yaml
@@ -18,6 +18,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^neutron/agent/ovn/.*$
       - ^neutron/plugins/ml2/drivers/macvtap/.*$
@@ -234,6 +235,7 @@
       - ^releasenotes/.*$
       - ^doc/.*$
       - ^setup.cfg$
+      - ^pyproject.toml$
       - ^.*\.conf\.sample$
       - ^.*\.rst$
       - ^neutron/locale/.*$
diff --git a/zuul.d/job-templates.yaml b/zuul.d/job-templates.yaml
index 1669e0a8061..bbb2ced2e88 100644
--- a/zuul.d/job-templates.yaml
+++ b/zuul.d/job-templates.yaml
@@ -16,6 +16,7 @@
               - ^releasenotes/.*$
               - ^setup.cfg$
               - ^plugin.spec$
+              - ^pyproject.toml$
               - ^tools/ovn_migration/.*$
               - ^tools/.*$
               - ^vagrant/.*$
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 38974b39ff0..9cdce5af2d8 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -31,6 +31,7 @@
               - ^releasenotes/.*$
               - ^doc/.*$
               - ^setup.cfg$
+              - ^pyproject.toml$
               - ^.*\.conf\.sample$
               - ^.*\.rst$
               - ^neutron/locale/.*$
diff --git a/zuul.d/rally.yaml b/zuul.d/rally.yaml
index 993b71ec78c..e80cac3d4fc 100644
--- a/zuul.d/rally.yaml
+++ b/zuul.d/rally.yaml
@@ -59,6 +59,7 @@
       - ^releasenotes/.*$
       - ^doc/.*$
       - ^setup.cfg$
+      - ^pyproject.toml$
       - ^.*\.conf\.sample$
       - ^.*\.rst$
       - ^neutron/locale/.*$
@@ -102,6 +103,7 @@
       - ^releasenotes/.*$
       - ^doc/.*$
       - ^setup.cfg$
+      - ^pyproject.toml$
       - ^.*\.conf\.sample$
       - ^.*\.rst$
       - ^neutron/locale/.*$
diff --git a/zuul.d/tempest-multinode.yaml b/zuul.d/tempest-multinode.yaml
index 6daaeeefda0..b1da0d40a8c 100644
--- a/zuul.d/tempest-multinode.yaml
+++ b/zuul.d/tempest-multinode.yaml
@@ -57,6 +57,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^neutron/agent/ovn/.*$
       - ^neutron/plugins/ml2/drivers/macvtap/.*$
@@ -390,6 +391,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^neutron/agent/dhcp/.*$
       - ^neutron/agent/l2/.*$
diff --git a/zuul.d/tempest-singlenode.yaml b/zuul.d/tempest-singlenode.yaml
index 82d70d1fce7..d2da0711a29 100644
--- a/zuul.d/tempest-singlenode.yaml
+++ b/zuul.d/tempest-singlenode.yaml
@@ -72,6 +72,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^vagrant/.*$
       - ^neutron/agent/ovn/.*$
@@ -221,6 +222,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^vagrant/.*$
       - ^neutron/agent/.*$
@@ -275,6 +277,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^vagrant/.*$
       - ^neutron/plugins/ml2/drivers/macvtap/.*$
@@ -435,6 +438,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^vagrant/.*$
       - ^roles/.*functional.*$
@@ -568,6 +572,7 @@
       - ^tools/.*$
       - ^tox.ini$
       - ^plugin.spec$
+      - ^pyproject.toml$
       - ^tools/ovn_migration/.*$
       - ^neutron/agent/dhcp/.*$
       - ^neutron/agent/l2/.*$