diff --git a/inventory/host_vars/smtp-mm-osuosl01.fedoraproject.org b/inventory/host_vars/smtp-mm-osuosl01.fedoraproject.org
index 88801d3e2a..0672a78f97 100644
--- a/inventory/host_vars/smtp-mm-osuosl01.fedoraproject.org
+++ b/inventory/host_vars/smtp-mm-osuosl01.fedoraproject.org
@@ -12,6 +12,7 @@ eth0_nm: 255.255.255.128
 has_ipv6: yes
 ks_repo: http://infrastructure.fedoraproject.org/repo/rhel/RHEL9-x86_64/
 ks_url: http://infrastructure.fedoraproject.org/repo/rhel/ks/kvm-rhel
+mem_size: 4096
 vmhost: osuosl01.fedoraproject.org
 volgroup: /dev/vg_guests
 vpn: true