diff --git a/inventory/host_vars/proxy03.fedoraproject.org b/inventory/host_vars/proxy03.fedoraproject.org
index 8e5bd096cc..a71bed73f8 100644
--- a/inventory/host_vars/proxy03.fedoraproject.org
+++ b/inventory/host_vars/proxy03.fedoraproject.org
@@ -2,6 +2,7 @@
 nm: 255.255.255.240
 gw: 66.35.62.174
 dns: 198.49.126.1
+max_mem_size: 8192
 
 ks_url: http://infrastructure.fedoraproject.org/repo/rhel/ks/kvm-fedora-27-ext
 ks_repo: http://infrastructure.fedoraproject.org/pub/fedora/linux/releases/27/Server/x86_64/os/