diff --git a/api/@internal/component/ets/column.d.ts b/api/@internal/component/ets/column.d.ts
index 8a6feea284dc684437b93173a47b6e3de910696e..f1045dccf42d3e8b095ec1cd35989f0e3fe3cbb2 100644
--- a/api/@internal/component/ets/column.d.ts
+++ b/api/@internal/component/ets/column.d.ts
@@ -37,6 +37,12 @@ declare class ColumnAttribute extends CommonMethod<ColumnAttribute> {
    * @since 7
    */
   alignItems(value: HorizontalAlign): ColumnAttribute;
+
+  /**
+   * Sets the alignment format of the subassembly in the vertical direction.
+   * @since 8
+   */
+  justifyContent(value: FlexAlign): ColumnAttribute;
 }
 
 declare const Column: ColumnInterface;
diff --git a/api/@internal/component/ets/row.d.ts b/api/@internal/component/ets/row.d.ts
index 412041e9dff153882804ffe6be67d59fa22266e9..6d723e4b8baf61b87857b95aced6fc55cc2b89ae 100644
--- a/api/@internal/component/ets/row.d.ts
+++ b/api/@internal/component/ets/row.d.ts
@@ -34,6 +34,12 @@ declare class RowAttribute extends CommonMethod<RowAttribute> {
    * @since 7
    */
   alignItems(value: VerticalAlign): RowAttribute;
+
+  /**
+   * Called when the horizontal alignment is set.
+   * @since 8
+   */
+   justifyContent(value: FlexAlign): RowAttribute;
 }
 
 declare const Row: RowInterface;