diff --git a/packages/block-library/src/post-comments/index.php b/packages/block-library/src/post-comments/index.php
index 8ddb0e6f74565f..2b20a9494eef3e 100644
--- a/packages/block-library/src/post-comments/index.php
+++ b/packages/block-library/src/post-comments/index.php
@@ -51,6 +51,8 @@ function render_block_core_post_comments( $attributes, $content, $block ) {
 	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classes ) );
 	$output             = ob_get_clean();
 
+	wp_enqueue_script( 'comment-reply' );
+
 	return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $output );
 }