diff --git a/inventory/group_vars/mailman_stg b/inventory/group_vars/mailman_stg
index 5520b83ed8..efb64f031c 100644
--- a/inventory/group_vars/mailman_stg
+++ b/inventory/group_vars/mailman_stg
@@ -19,7 +19,7 @@ ipa_client_sudo_groups:
   - sysadmin-tools
 ipa_host_group: mailman
 ipa_host_group_desc: Mailing list services
-lvm_size: 300000
+lvm_size: 350000
 # Used by the mailman role
 mailman_db_server: db01.stg.iad2.fedoraproject.org
 mailman_domains: