diff --git a/packages/block-library/src/gallery/index.php b/packages/block-library/src/gallery/index.php
index 342264de6fce3a..115f1774730423 100644
--- a/packages/block-library/src/gallery/index.php
+++ b/packages/block-library/src/gallery/index.php
@@ -35,6 +35,8 @@ function block_core_gallery_data_id_backcompatibility( $parsed_block ) {
 /**
  * Filter to randomize the order of image blocks.
  *
+ * @since 6.5.0
+ *
  * @param array $parsed_block The block being rendered.
  * @return array The block object with randomized order of image blocks.
  */