diff --git a/inventory/host_vars/mailman01.stg.iad2.fedoraproject.org b/inventory/host_vars/mailman01.stg.iad2.fedoraproject.org
index 1b1c351550..2df86ea89c 100644
--- a/inventory/host_vars/mailman01.stg.iad2.fedoraproject.org
+++ b/inventory/host_vars/mailman01.stg.iad2.fedoraproject.org
@@ -2,7 +2,7 @@
 datacenter: iad2
 eth0_ipv4_gw: 10.3.166.254
 eth0_ipv4_ip: 10.3.166.40
-ks_repo: http://10.3.163.35/repo/rhel/RHEL7-x86_64/
-ks_url: http://10.3.163.35/repo/rhel/ks/kvm-rhel-7-iad2
-vmhost: vmhost-x86-03.stg.iad2.fedoraproject.org
+ks_repo: http://10.3.163.35/repo/rhel/RHEL9-x86_64/
+ks_url: http://10.3.163.35/repo/rhel/ks/kvm-rhel
+vmhost: vmhost-x86-09.stg.iad2.fedoraproject.org
 volgroup: /dev/vg_guests
diff --git a/inventory/inventory b/inventory/inventory
index aa91662db6..f1d916b6ef 100644
--- a/inventory/inventory
+++ b/inventory/inventory
@@ -126,8 +126,8 @@ github2fedmsg01.stg.iad2.fedoraproject.org
 [mailman]
 mailman01.iad2.fedoraproject.org
 
-#[mailman_stg]
-#mailman01.stg.iad2.fedoraproject.org
+[mailman_stg]
+mailman01.stg.iad2.fedoraproject.org
 
 [mbs_frontend]
 mbs-frontend01.iad2.fedoraproject.org
@@ -651,7 +651,7 @@ ipa02.stg.iad2.fedoraproject.org
 ipa03.stg.iad2.fedoraproject.org
 ipsilon01.stg.iad2.fedoraproject.org
 koji01.stg.iad2.fedoraproject.org
-#mailman01.stg.iad2.fedoraproject.org
+mailman01.stg.iad2.fedoraproject.org
 mbs-backend01.stg.iad2.fedoraproject.org
 mbs-frontend01.stg.iad2.fedoraproject.org
 memcached01.stg.iad2.fedoraproject.org
@@ -822,7 +822,7 @@ fedmsg_gateways_stg
 # These are groups that are using the python34 fedmsg stack.
 [python34_fedmsg:children]
 mailman
-#mailman_stg
+mailman_stg
 
 ## END fedmsg services
 
diff --git a/playbooks/groups/mailman.yml b/playbooks/groups/mailman.yml
index 88058da083..7f616222b2 100644
--- a/playbooks/groups/mailman.yml
+++ b/playbooks/groups/mailman.yml
@@ -45,7 +45,7 @@
 #
 
 - name: prepare setting up the database
-  hosts: db01.iad2.fedoraproject.org
+  hosts: db01.iad2.fedoraproject.org:db01.stg.iad2.fedoraproject.org
   gather_facts: no
   user: root
 
@@ -56,7 +56,7 @@
     - packages
 
 - name: setup the database
-  hosts: db01.iad2.fedoraproject.org
+  hosts: db01.iad2.fedoraproject.org:db01.stg.iad2.fedoraproject.org
   gather_facts: no
   become: yes
   become_user: postgres