diff --git a/packages/mermaid/src/rendering-util/rendering-elements/clusters.js b/packages/mermaid/src/rendering-util/rendering-elements/clusters.js
index 85f9674c9..394a89cdd 100644
--- a/packages/mermaid/src/rendering-util/rendering-elements/clusters.js
+++ b/packages/mermaid/src/rendering-util/rendering-elements/clusters.js
@@ -359,9 +359,9 @@ const shapes = {
 
 let clusterElems = new Map();
 
-export const insertCluster = (elem, node) => {
+export const insertCluster = async (elem, node) => {
   const shape = node.shape || 'rect';
-  const cluster = shapes[shape](elem, node);
+  const cluster = await shapes[shape](elem, node);
   clusterElems.set(node.id, cluster);
   return cluster;
 };