diff --git a/lib/tempest b/lib/tempest
index 552e1c22a3..8ee986d555 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -703,6 +703,9 @@ function install_tempest {
     git checkout $TEMPEST_BRANCH
 
     tox -r --notest -efull
+    # TODO: remove the trailing pip constraint when a proper fix
+    # arrives for bug https://bugs.launchpad.net/devstack/+bug/1906322
+    $TEMPEST_DIR/.tox/tempest/bin/pip install -U -r $RC_DIR/tools/cap-pip.txt
     # NOTE(mtreinish) Respect constraints in the tempest full venv, things that
     # are using a tox job other than full will not be respecting constraints but
     # running pip install -U on tempest requirements