diff --git a/components/lib/datatable/BodyRow.vue b/components/lib/datatable/BodyRow.vue
index 227b9e710f..fa02848741 100644
--- a/components/lib/datatable/BodyRow.vue
+++ b/components/lib/datatable/BodyRow.vue
@@ -277,6 +277,7 @@ export default {
     },
     watch: {
         expandedRows: {
+            deep: true,
             immediate: true,
             handler(newValue) {
                 this.d_rowExpanded = this.dataKey ? newValue?.[ObjectUtils.resolveFieldData(this.rowData, this.dataKey)] !== undefined : newValue?.some((d) => this.equals(this.rowData, d));