diff --git a/packages/mermaid/package.json b/packages/mermaid/package.json
index 6bdfa7e4e..9fc73654e 100644
--- a/packages/mermaid/package.json
+++ b/packages/mermaid/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mermaid-chart/mermaid",
-  "version": "11.0.0-beta.15",
+  "version": "11.0.0-beta.17",
   "description": "Markdown-ish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.",
   "type": "module",
   "module": "./dist/mermaid.core.mjs",
diff --git a/packages/mermaid/src/rendering-util/rendering-elements/clusters.js b/packages/mermaid/src/rendering-util/rendering-elements/clusters.js
index 51c32019c..43cabca4f 100644
--- a/packages/mermaid/src/rendering-util/rendering-elements/clusters.js
+++ b/packages/mermaid/src/rendering-util/rendering-elements/clusters.js
@@ -182,6 +182,7 @@ const roundedWithTitle = (parent, node) => {
     .attr('class', node.cssClasses)
     .attr('id', node.id)
     .attr('data-et', 'node')
+    .attr('data-node', 'true')
     .attr('data-id', node.id);
 
   // add the rect