diff --git a/tcp_tests/templates/heat-cicd-k8s-calico-sl/underlay.hot b/tcp_tests/templates/heat-cicd-k8s-calico-sl/underlay.hot
index deb6158..87f7563 100644
--- a/tcp_tests/templates/heat-cicd-k8s-calico-sl/underlay.hot
+++ b/tcp_tests/templates/heat-cicd-k8s-calico-sl/underlay.hot
@@ -50,6 +50,9 @@
   net_public:
     type: string
 
+  foundation_image:
+    type: string
+
 resources:
   networks:
     type: MCP::Networks
@@ -347,6 +350,7 @@
       mcp_version: { get_param: mcp_version }
       instance_domain: {get_param: instance_domain}
       instance_name: foundation
+      instance_image: { get_param: foundation_image }
       instance_flavor: {get_param: foundation_flavor}
       network: { get_attr: [networks, network] }
       underlay_userdata: { get_file: ./underlay--user-data-foundation.yaml }