diff --git a/nfv/tox.ini b/nfv/tox.ini
index 59c7e35a..62c5a52f 100755
--- a/nfv/tox.ini
+++ b/nfv/tox.ini
@@ -16,7 +16,9 @@ stxdir = {toxinidir}/../..
 
 [testenv]
 recreate = True
-install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/upper-constraints.txt} {opts} {packages}
+install_command = pip install \
+    -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/stein/upper-constraints.txt} \
+    {opts} {packages}
 whitelist_externals = cp
 
 [nfv]
diff --git a/nova-api-proxy/tox.ini b/nova-api-proxy/tox.ini
index d72ce7c4..7d9a55a6 100644
--- a/nova-api-proxy/tox.ini
+++ b/nova-api-proxy/tox.ini
@@ -5,7 +5,9 @@ skipsdist = True
 
 [testenv]
 basepython = python3
-install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=stable/pike}  {opts} {packages}
+install_command = pip install \
+    -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/stein/upper-constraints.txt} \
+    {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          OS_STDOUT_CAPTURE=1
          OS_STDERR_CAPTURE=1