diff --git a/mdd-data/org/validate-local.yml b/mdd-data/org/validate-local.yml
index a270c7d..cb553cb 100644
--- a/mdd-data/org/validate-local.yml
+++ b/mdd-data/org/validate-local.yml
@@ -5,4 +5,8 @@ mdd_schemas:
   - name: banner
     file: 'local/banner.schema.yml'
   - name: dns
-    file: 'local/dns.schema.yml'
+    file: 'local/dns.schema.yml.j2'
+    validate_vars:
+      dns_servers:
+        - 208.67.222.222
+        - 208.67.220.220
diff --git a/play.sh b/play.sh
index 4ad01af..8da80b5 100755
--- a/play.sh
+++ b/play.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-IMAGE=ghcr.io/model-driven-devops/mdd:1.2.2
+IMAGE=ghcr.io/model-driven-devops/mdd:1.2.3
 
 OPTIONS="--env ANSIBLE_PYTHON_INTERPRETER=/usr/bin/python3"
 if [[ ! -z "$ANSIBLE_VAULT_PASSWORD_FILE" ]]; then
diff --git a/requirements.yml b/requirements.yml
index bbb6ece..f01bd11 100644
--- a/requirements.yml
+++ b/requirements.yml
@@ -1,7 +1,7 @@
 collections:
   - name: https://github.com/ciscodevnet/ansible-cml.git
     type: git
-  - name: https://github.com/model-driven-devops/ansible-mdd.git,1.2.2
+  - name: https://github.com/model-driven-devops/ansible-mdd.git,1.2.3
     type: git
   - name: https://github.com/model-driven-devops/ansible-nso.git
     type: git
diff --git a/schemas/local/dns.schema.yml b/schemas/local/dns.schema.yml.j2
similarity index 91%
rename from schemas/local/dns.schema.yml
rename to schemas/local/dns.schema.yml.j2
index bf3996d..541ecdd 100644
--- a/schemas/local/dns.schema.yml
+++ b/schemas/local/dns.schema.yml.j2
@@ -39,6 +39,4 @@ properties:
                           description: DNS server address
                           type: string
                           format: ipv4
-                          enum:
-                            - 208.67.222.222
-                            - 208.67.220.220
+                          enum: {{ validate_vars.dns_servers }}