diff --git a/.zuul.yaml b/.zuul.yaml
index 9bb6ef1..4f0c560 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -4,7 +4,6 @@
       - lib-forward-testing
       - lib-forward-testing-python3
       - openstack-cover-jobs
-      - openstack-lower-constraints-jobs
       - openstack-python-jobs
       - openstack-python3-train-jobs
       - periodic-stable-jobs
diff --git a/tox.ini b/tox.ini
index c21581d..05d3850 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,10 @@
 [tox]
 minversion = 2.0
 envlist = py27,py37,pep8
+# Pin setuptools via virtualenv as latest virtualenv pulls in 65.3.0
+# version of setuptools for py37, which causes installation problems
+# (virtualenv 20.16.3 uses setuptools 63.4.1).
+requires = virtualenv<20.16.4
 
 [testenv]
 install_command = pip install {opts} {packages}