diff --git a/.zuul.yaml b/.zuul.yaml
index e9946763..d3e031d3 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -27,7 +27,7 @@
       - horizon-non-primary-django-jobs
       - horizon-nodejs14-jobs
       - openstack-lower-constraints-jobs
-      - openstack-python3-yoga-jobs-horizon
+      - openstack-python3-zed-jobs-horizon
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
     check:
diff --git a/heat_dashboard/test/helpers.py b/heat_dashboard/test/helpers.py
index 6bce80d9..be337a61 100644
--- a/heat_dashboard/test/helpers.py
+++ b/heat_dashboard/test/helpers.py
@@ -308,7 +308,6 @@ class TestCase(horizon_helpers.TestCase):
     def mock_rest_request(**args):
         mock_args = {
             'user.is_authenticated.return_value': True,
-            'is_ajax.return_value': True,
             'policy.check.return_value': True,
             'body': ''
         }
@@ -398,6 +397,12 @@ class APITestCase(TestCase):
         return self.heatclient
 
 
+class RestAPITestCase(TestCase):
+    def setUp(self):
+        super().setUp()
+        mock.patch('horizon.utils.http.is_ajax', return_value=True).start()
+
+
 # Need this to test both Glance API V1 and V2 versions
 class ResetImageAPIVersionMixin(object):
 
diff --git a/heat_dashboard/test/tests/api/test_heat_rest.py b/heat_dashboard/test/tests/api/test_heat_rest.py
index 8eda8d93..53f0f1e6 100644
--- a/heat_dashboard/test/tests/api/test_heat_rest.py
+++ b/heat_dashboard/test/tests/api/test_heat_rest.py
@@ -19,7 +19,7 @@ from heat_dashboard.test import helpers as test
 from openstack_dashboard import api
 
 
-class ValidateRestTestCase(test.TestCase):
+class ValidateRestTestCase(test.RestAPITestCase):
     @mock.patch.object(heat.api, 'heat')
     def test_validate_post(self, hc):
         body = '''{"template_url":"http://localhost/template.yaml"}'''
@@ -32,7 +32,7 @@ class ValidateRestTestCase(test.TestCase):
         hc.template_validate.assert_called_once_with(request, **kwargs)
 
 
-class HeatRestTestCase(test.TestCase):
+class HeatRestTestCase(test.RestAPITestCase):
     #
     # Services
     #
diff --git a/lower-constraints.txt b/lower-constraints.txt
index 32796612..39c8ae4a 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -1,7 +1,7 @@
 amqp==2.1.1
-appdirs==1.3.0
+appdirs==1.4.0
 asn1crypto==0.23.0
-Babel==2.3.4
+Babel==2.6.0
 cachetools==2.0.0
 cffi==1.14.0
 chardet==3.0.4
@@ -10,14 +10,14 @@ cmd2==0.8.0
 colorama==0.3.9
 contextlib2==0.4.0
 coverage==4.0
-cryptography==2.7
+cryptography==3.0
 debtcollector==1.2.0
-decorator==4.1.0
+decorator==4.4.2
 deprecation==1.0
-Django==2.2
-django-appconf==1.0.2
+Django==3.2
+django-appconf==1.0.5
 django-babel==0.6.2
-django-compressor==2.0
+django-compressor==2.4.1
 django-pyscss==2.0.2
 docutils==0.11
 dogpile.cache==0.6.2
@@ -27,7 +27,7 @@ fasteners==0.7.0
 fixtures==3.0.0
 futurist==1.2.0
 greenlet==0.4.10
-horizon==18.3.1
+horizon==22.0.0
 idna==2.6
 iso8601==0.1.11
 Jinja2==2.10
@@ -35,7 +35,7 @@ jmespath==0.9.0
 jsonpatch==1.16
 jsonpointer==1.13
 jsonschema==2.6.0
-keystoneauth1==3.16.0
+keystoneauth1==4.3.1
 kombu==4.0.0
 linecache2==1.0.0
 MarkupSafe==1.0
@@ -49,21 +49,21 @@ openstacksdk==0.35.0
 os-client-config==1.28.0
 os-service-types==1.7.0
 osc-lib==1.8.0
-oslo.concurrency==3.26.0
-oslo.config==5.2.0
-oslo.context==2.19.2
-oslo.i18n==3.15.3
-oslo.log==3.36.0
+oslo.concurrency==4.5.0
+oslo.config==8.8.0
+oslo.context==4.1.0
+oslo.i18n==5.1.0
+oslo.log==4.7.0
 oslo.messaging==5.29.0
 oslo.middleware==3.31.0
-oslo.policy==1.30.0
-oslo.serialization==2.18.0
+oslo.policy==3.11.0
+oslo.serialization==4.3.0
 oslo.service==1.24.0
-oslo.utils==3.33.0
-osprofiler==2.3.0
+oslo.utils==4.12.0
+osprofiler==3.4.2
 Paste==2.0.2
 PasteDeploy==1.5.0
-pbr==2.0.0
+pbr==5.5.0
 pika==0.10.0
 pika-pool==0.1.3
 Pint==0.5
@@ -72,12 +72,12 @@ prettytable==0.7.2
 pycparser==2.18
 pyinotify==0.9.6
 pymongo==3.0.2
-pyOpenSSL==17.1.0
+pyOpenSSL==19.1.0
 pyparsing==2.1.0
 pyperclip==1.5.27
 pyScss==1.3.7
-python-cinderclient==5.0.0
-python-dateutil==2.5.3
+python-cinderclient==8.0.0
+python-dateutil==2.8.1
 python-glanceclient==2.8.0
 python-heatclient==1.10.0
 python-keystoneclient==3.22.0
@@ -86,21 +86,21 @@ python-neutronclient==6.7.0
 python-novaclient==9.1.0
 python-swiftclient==3.2.0
 pytz==2013.6
-PyYAML==3.13
+PyYAML==6.0
 rcssmin==1.0.6
 repoze.lru==0.7
-requests==2.14.2
+requests==2.25.1
 requestsexceptions==1.2.0
 restructuredtext-lint==1.1.1
-rfc3986==0.3.1
-rjsmin==1.0.12
+rfc3986==1.5.0
+rjsmin==1.1.0
 Routes==2.3.1
 selenium==2.50.1
 semantic-version==2.3.1
 simplejson==3.5.1
-six==1.10.0
+six==1.16.0
 statsd==3.2.1
-stevedore==1.20.0
+stevedore==3.3.0
 tenacity==3.2.1
 termcolor==1.1.0
 testtools==2.2.0
@@ -109,7 +109,7 @@ unittest2==1.1.0
 vine==1.1.4
 warlock==1.2.0
 WebOb==1.7.1
-wrapt==1.7.0
+wrapt==1.11
 XStatic==1.0.0
 XStatic-Angular==1.5.8.0
 XStatic-Angular-Bootstrap==2.2.0.0
@@ -124,9 +124,9 @@ XStatic-D3==3.5.17.0
 XStatic-Font-Awesome==4.7.0.0
 XStatic-Hogan==2.0.0.2
 XStatic-Jasmine==2.4.1.1
-XStatic-jQuery==1.8.2.1
+XStatic-jQuery==1.12.4.1
 XStatic-JQuery-Migrate==1.2.1.1
-XStatic-jquery-ui==1.10.4.1
+XStatic-jquery-ui==1.12.1.1
 XStatic-JQuery.quicksearch==2.0.3.1
 XStatic-JQuery.TableSorter==2.14.5.1
 XStatic-JSEncrypt==2.3.1.1
diff --git a/requirements.txt b/requirements.txt
index b737e47a..aee52c37 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,12 +7,12 @@
 # be installed in a specific order.
 #
 # PBR should always appear first
-pbr!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=5.5.0 # Apache-2.0
 python-heatclient>=1.10.0 # Apache-2.0
 
 # This will be installed from git in OpenStack CI if the job setting
 # required-projects for horizon:
-horizon>=18.3.1 # Apache-2.0
+horizon>=22.0.0 # Apache-2.0
 
 xstatic-angular-uuid>=0.0.4.0 # MIT
 xstatic-angular-vis>=4.16.0.0 # MIT