diff --git a/wp-includes/block-patterns.php b/wp-includes/block-patterns.php
index 91d239db52..074ed33c84 100644
--- a/wp-includes/block-patterns.php
+++ b/wp-includes/block-patterns.php
@@ -189,6 +189,7 @@ function _register_remote_theme_patterns() {
  *   - Categories       (comma-separated values)
  *   - Keywords         (comma-separated values)
  *   - Block Types      (comma-separated values)
+ *   - Post Types       (comma-separated values)
  *   - Inserter         (yes/no)
  *
  * @since 6.0.0
@@ -203,6 +204,7 @@ function _register_theme_block_patterns() {
 		'categories'    => 'Categories',
 		'keywords'      => 'Keywords',
 		'blockTypes'    => 'Block Types',
+		'postTypes'     => 'Post Types',
 		'inserter'      => 'Inserter',
 	);
 
@@ -274,7 +276,7 @@ function _register_theme_block_patterns() {
 					}
 
 					// For properties of type array, parse data as comma-separated.
-					foreach ( array( 'categories', 'keywords', 'blockTypes' ) as $property ) {
+					foreach ( array( 'categories', 'keywords', 'blockTypes', 'postTypes' ) as $property ) {
 						if ( ! empty( $pattern_data[ $property ] ) ) {
 							$pattern_data[ $property ] = array_filter(
 								preg_split(
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-block-patterns-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-block-patterns-controller.php
index 15a7c28279..60064abf05 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-block-patterns-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-block-patterns-controller.php
@@ -124,6 +124,7 @@ public function prepare_item_for_response( $item, $request ) {
 			'description'   => 'description',
 			'viewportWidth' => 'viewport_width',
 			'blockTypes'    => 'block_types',
+			'postTypes'     => 'post_types',
 			'categories'    => 'categories',
 			'keywords'      => 'keywords',
 			'content'       => 'content',
@@ -185,6 +186,12 @@ public function get_item_schema() {
 					'readonly'    => true,
 					'context'     => array( 'view', 'edit', 'embed' ),
 				),
+				'post_types'     => array(
+					'description' => __( ' An array of post types that the pattern is restricted to be used with.' ),
+					'type'        => 'array',
+					'readonly'    => true,
+					'context'     => array( 'view', 'edit', 'embed' ),
+				),
 				'categories'     => array(
 					'description' => __( 'The pattern category slugs.' ),
 					'type'        => 'array',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 9a913b63f4..e739d444d6 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-alpha-54262';
+$wp_version = '6.1-alpha-54263';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.