diff --git a/inventory/host_vars/arm01-builder22.arm.fedoraproject.org b/inventory/host_vars/arm01-builder22.arm.fedoraproject.org
index c15f0db14c..3da9cf3661 100644
--- a/inventory/host_vars/arm01-builder22.arm.fedoraproject.org
+++ b/inventory/host_vars/arm01-builder22.arm.fedoraproject.org
@@ -2,3 +2,4 @@
 koji_server_url: "http://koji.stg.fedoraproject.org/kojihub"
 koji_weburl: "http://koji.stg.fedoraproject.org/koji"
 koji_topurl: "http://kojipkgs.stg.fedoraproject.org/"
+datacenter: staging
diff --git a/inventory/host_vars/arm01-builder23.arm.fedoraproject.org b/inventory/host_vars/arm01-builder23.arm.fedoraproject.org
index c15f0db14c..3da9cf3661 100644
--- a/inventory/host_vars/arm01-builder23.arm.fedoraproject.org
+++ b/inventory/host_vars/arm01-builder23.arm.fedoraproject.org
@@ -2,3 +2,4 @@
 koji_server_url: "http://koji.stg.fedoraproject.org/kojihub"
 koji_weburl: "http://koji.stg.fedoraproject.org/koji"
 koji_topurl: "http://kojipkgs.stg.fedoraproject.org/"
+datacenter: staging