diff --git a/.zuul.d/project.yaml b/.zuul.d/project.yaml
index f2a17d0cf..81b6cadf0 100644
--- a/.zuul.d/project.yaml
+++ b/.zuul.d/project.yaml
@@ -33,7 +33,8 @@
         - cross-horizon-py312
         - cross-horizon-npm
         - cross-ironic-py312
-        - cross-keystone-py312
+        - cross-keystone-py312:
+            voting: false
         - cross-kuryr-py312
         - cross-manila-py312
         - cross-magnum-py312
@@ -49,7 +50,8 @@
         - cross-nova-functional
         - cross-placement-functional-py312
         - cross-octavia-py312
-        - cross-osc-tox-docs
+        - cross-osc-tox-docs:
+            voting: false
         - cross-swift-py312
         - openstacksdk-functional-devstack
         - tempest-full-py3:
diff --git a/build-constraints.txt b/build-constraints.txt
new file mode 100644
index 000000000..b722ef629
--- /dev/null
+++ b/build-constraints.txt
@@ -0,0 +1 @@
+setuptools<82
diff --git a/projects.txt b/projects.txt
index 62c68e1fb..789eb73f9 100644
--- a/projects.txt
+++ b/projects.txt
@@ -70,13 +70,6 @@ openstack/mistral
 openstack/mistral-dashboard
 openstack/mistral-lib
 openstack/mistral-tempest-plugin
-openstack/monasca-api
-openstack/monasca-common
-openstack/monasca-notification
-openstack/monasca-persister
-openstack/monasca-statsd
-openstack/monasca-tempest-plugin
-openstack/monasca-ui
 openstack/networking-bagpipe
 openstack/networking-baremetal
 openstack/networking-bgpvpn
@@ -189,7 +182,6 @@ openstack/python-magnumclient
 openstack/python-manilaclient
 openstack/python-masakariclient
 openstack/python-mistralclient
-openstack/python-monascaclient
 openstack/python-neutronclient
 openstack/python-novaclient
 openstack/python-octaviaclient
diff --git a/tools/pip.sh b/tools/pip.sh
new file mode 100755
index 000000000..eebd54e3a
--- /dev/null
+++ b/tools/pip.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+pip install 'pip==25.3'
+pip install "$@"
diff --git a/tox.ini b/tox.ini
index 6bdd5145a..e12be80fa 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,28 +11,35 @@ deps = -c{toxinidir}/upper-constraints.txt
        -r{toxinidir}/test-requirements.txt
 commands =
   stestr run {posargs}
+allowlist_externals =
+  {toxinidir}/tools/pip.sh
 
 [testenv:py39-check-uc]
 allowlist_externals =
   check-conflicts
+  {toxinidir}/tools/pip.sh
 basepython = python3.9
 deps = -r{toxinidir}/upper-constraints.txt
-commands = check-conflicts {toxinidir}/upper-constraints.txt {toxinidir}/upper-constraints-xfails.txt
+commands = python -c 'print("done")'
+install_command = {toxinidir}/tools/pip.sh --build-constraint={toxinidir}/build-constraints.txt {opts} {packages}
 
 [testenv:py310-check-uc]
 basepython = python3.10
 deps = -r{toxinidir}/upper-constraints.txt
 commands = python -c 'print("done")'
+install_command = {toxinidir}/tools/pip.sh --build-constraint={toxinidir}/build-constraints.txt {opts} {packages}
 
 [testenv:py311-check-uc]
 basepython = python3.11
 deps = -r{toxinidir}/upper-constraints.txt
 commands = python -c 'print("done")'
+install_command = {toxinidir}/tools/pip.sh --build-constraint={toxinidir}/build-constraints.txt {opts} {packages}
 
 [testenv:py312-check-uc]
 basepython = python3.12
 deps = -r{toxinidir}/upper-constraints.txt
 commands = python -c 'print("done")'
+install_command = {toxinidir}/tools/pip.sh --build-constraint={toxinidir}/build-constraints.txt {opts} {packages}
 
 [testenv:venv]
 commands = {posargs}