diff --git a/zuul.d/integrated-gate.yaml b/zuul.d/integrated-gate.yaml
index ec5e9af..70fdc79 100644
--- a/zuul.d/integrated-gate.yaml
+++ b/zuul.d/integrated-gate.yaml
@@ -286,7 +286,6 @@
       devstack_services:
         neutron-placement: true
         neutron-qos: true
-      tempest_concurrency: 2
     group-vars:
       # NOTE(mriedem): The ENABLE_VOLUME_MULTIATTACH variable is used on both
       # the controller and subnode prior to Rocky so we have to make sure the
diff --git a/zuul.d/stable-jobs.yaml b/zuul.d/stable-jobs.yaml
index 0aa1aac..89435ce 100644
--- a/zuul.d/stable-jobs.yaml
+++ b/zuul.d/stable-jobs.yaml
@@ -276,7 +276,6 @@
       devstack_services:
         neutron-placement: true
         neutron-qos: true
-      tempest_concurrency: 2
     group-vars:
       # NOTE(mriedem): The ENABLE_VOLUME_MULTIATTACH variable is used on both
       # the controller and subnode prior to Rocky so we have to make sure the