diff --git a/.zuul.yaml b/.zuul.yaml
new file mode 100644
index 0000000..6799c8b
--- /dev/null
+++ b/.zuul.yaml
@@ -0,0 +1,19 @@
+- job:
+    name: os-api-ref-nova-src
+    parent: build-openstack-api-ref
+    description: |
+      Run the api-ref job against nova with proposed os-api-ref change.
+    vars:
+      zuul_work_dir: src/git.openstack.org/openstack/nova
+    required-projects:
+      - openstack/nova
+      - openstack/os-api-ref
+
+- project:
+    name: openstack/os-api-ref
+    check:
+      jobs:
+        - os-api-ref-nova-src
+    gate:
+      jobs:
+        - os-api-ref-nova-src
diff --git a/tools/tox_install.sh b/tools/tox_install.sh
deleted file mode 100755
index e61b63a..0000000
--- a/tools/tox_install.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-
-# Client constraint file contains this client version pin that is in conflict
-# with installing the client from source. We should remove the version pin in
-# the constraints file before applying it for from-source installation.
-
-CONSTRAINTS_FILE="$1"
-shift 1
-
-set -e
-
-# NOTE(tonyb): Place this in the tox enviroment's log dir so it will get
-# published to logs.openstack.org for easy debugging.
-localfile="$VIRTUAL_ENV/log/upper-constraints.txt"
-
-if [[ "$CONSTRAINTS_FILE" != http* ]]; then
-    CONSTRAINTS_FILE="file://$CONSTRAINTS_FILE"
-fi
-# NOTE(tonyb): need to add curl to bindep.txt if the project supports bindep
-curl "$CONSTRAINTS_FILE" --insecure --progress-bar --output "$localfile"
-
-pip install -c"$localfile" openstack-requirements
-
-# This is the main purpose of the script: Allow local installation of
-# the current repo. It is listed in constraints file and thus any
-# install will be constrained and we need to unconstrain it.
-edit-constraints "$localfile" -- "$CLIENT_NAME"
-
-pip install -c"$localfile" -U "$@"
-exit $?
diff --git a/tox.ini b/tox.ini
index f549054..b99a9d3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,10 +6,10 @@ skipsdist = True
 [testenv]
 setenv =
     VIRTUAL_ENV={envdir}
-    BRANCH_NAME=master
-    CLIENT_NAME=os-api-ref
-install_command = {toxinidir}/tools/tox_install.sh {toxinidir}/upper-constraints.txt {opts} {packages}
-deps = -r{toxinidir}/requirements.txt
+install_command = pip install -U {opts} {packages}
+deps =
+     -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+     -r{toxinidir}/requirements.txt
      -r{toxinidir}/test-requirements.txt
 commands = python setup.py test --slowest --no-parallel --testr-args='{posargs}'