diff --git a/cni.Dockerfile b/cni.Dockerfile
index 7f073bb0e..30e2b63ee 100644
--- a/cni.Dockerfile
+++ b/cni.Dockerfile
@@ -8,7 +8,7 @@ RUN GO111MODULE=auto go build -o /go/bin/kuryr-cni ./kuryr_cni/pkg/*
 FROM quay.io/centos/centos:stream9
 LABEL authors="Antoni Segura Puimedon<toni@kuryr.org>, Michał Dulko<mdulko@redhat.com>"
 
-ARG UPPER_CONSTRAINTS_FILE="https://releases.openstack.org/constraints/upper/master"
+ARG UPPER_CONSTRAINTS_FILE="https://releases.openstack.org/constraints/upper/2023.2"
 ARG OSLO_LOCK_PATH=/var/kuryr-lock
 ARG RDO_REPO=https://repos.fedorapeople.org/repos/openstack/openstack-yoga/rdo-release-yoga-1.el9s.noarch.rpm
 
diff --git a/controller.Dockerfile b/controller.Dockerfile
index 125f7a629..ce4aa1d2b 100644
--- a/controller.Dockerfile
+++ b/controller.Dockerfile
@@ -1,7 +1,7 @@
 FROM quay.io/centos/centos:stream9
 LABEL authors="Antoni Segura Puimedon<toni@kuryr.org>, Michał Dulko<mdulko@redhat.com>"
 
-ARG UPPER_CONSTRAINTS_FILE="https://releases.openstack.org/constraints/upper/master"
+ARG UPPER_CONSTRAINTS_FILE="https://releases.openstack.org/constraints/upper/2023.2"
 
 RUN dnf upgrade -y \
     && dnf install -y epel-release \
diff --git a/tox.ini b/tox.ini
index d920ca831..b4953a2c3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,7 @@ passenv = HOME
 setenv = VIRTUAL_ENV={envdir}
 usedevelop = True
 install_command = pip install {opts} {packages}
-deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.2}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 allowlist_externals = sh
@@ -47,7 +47,7 @@ commands =
 
 [testenv:docs]
 basepython = python3
-deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+deps = -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.2}
        -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W -b html doc/source doc/build/html