diff --git a/inventory/group_vars/unbound b/inventory/group_vars/unbound
index 7be065c033..03fa96c7bb 100644
--- a/inventory/group_vars/unbound
+++ b/inventory/group_vars/unbound
@@ -1,6 +1,6 @@
 ---
 lvm_size: 10000
-mem_size: 1024
+mem_size: 2048
 num_cpus: 2
 
 tcp_ports: [ 80, 443 ]