diff --git a/playbooks/groups/overcloud-config.yml b/playbooks/groups/overcloud-config.yml
index a59eb0ba2f..83a0e487f0 100644
--- a/playbooks/groups/overcloud-config.yml
+++ b/playbooks/groups/overcloud-config.yml
@@ -117,7 +117,7 @@
       network_name: external
       cidr: 209.132.184.0/24
       allocation_pool_start: 209.132.184.140
-      allocation_pool_end: 209.132.184.146
+      allocation_pool_end: 209.132.184.150
       gateway_ip: 209.132.184.254
       enable_dhcp: false
     register: EXTERNAL_SUBNET_ID