diff --git a/.zuul.yaml b/.zuul.yaml
index 7055d9d..0071aed 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -1,3 +1,16 @@
+- job:
+    name: zuul-client-zuul-functional
+    parent: tox
+    description: |
+      Test that Zuul and zuul-client work together.
+    required-projects:
+      - zuul/zuul
+      - zuul/zuul-client
+    vars:
+      zuul_work_dir: "{{ zuul.projects['opendev.org/zuul/zuul'].src_dir }}"
+      tox_envlist: zuul_client
+    nodeset: ubuntu-bionic
+
 - project:
     vars:
       release_python: python3
@@ -13,6 +26,7 @@
         - tox-py38:
             nodeset: ubuntu-bionic
             timeout: 3600
+        - zuul-client-zuul-functional
         - build-python-release
     gate:
       jobs:
@@ -26,6 +40,7 @@
         - tox-py38:
             nodeset: ubuntu-bionic
             timeout: 3600
+        - zuul-client-zuul-functional
         - build-python-release
     promote:
       jobs: