diff --git a/.changeset/eleven-rocks-leave.md b/.changeset/eleven-rocks-leave.md
new file mode 100644
index 0000000000..a8fcbae1f0
--- /dev/null
+++ b/.changeset/eleven-rocks-leave.md
@@ -0,0 +1,5 @@
+---
+'mermaid': patch
+---
+
+fix: Kanban diagrams will not render when adding a number as ticket id or assigned for a task
diff --git a/packages/mermaid/src/diagrams/kanban/kanbanDb.ts b/packages/mermaid/src/diagrams/kanban/kanbanDb.ts
index 478c378038..a9bcbb7b81 100644
--- a/packages/mermaid/src/diagrams/kanban/kanbanDb.ts
+++ b/packages/mermaid/src/diagrams/kanban/kanbanDb.ts
@@ -138,13 +138,13 @@ const addNode = (level: number, id: string, descr: string, type: number, shapeDa
       node.label = doc?.label;
     }
     if (doc?.icon) {
-      node.icon = doc?.icon;
+      node.icon = doc?.icon.toString();
     }
     if (doc?.assigned) {
-      node.assigned = doc?.assigned;
+      node.assigned = doc?.assigned.toString();
     }
     if (doc?.ticket) {
-      node.ticket = doc?.ticket;
+      node.ticket = doc?.ticket.toString();
     }
 
     if (doc?.priority) {