diff --git a/wp-includes/class-phpass.php b/wp-includes/class-phpass.php
index 5411b36483..055925b20f 100644
--- a/wp-includes/class-phpass.php
+++ b/wp-includes/class-phpass.php
@@ -173,8 +173,8 @@ class PasswordHash {
 		$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
 
 		$output = '$2a$';
-		$output .= chr(ord('0') + $this->iteration_count_log2 / 10);
-		$output .= chr(ord('0') + $this->iteration_count_log2 % 10);
+		$output .= chr((int)(ord('0') + $this->iteration_count_log2 / 10));
+		$output .= chr((ord('0') + $this->iteration_count_log2 % 10));
 		$output .= '$';
 
 		$i = 0;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index be28350a99..11c9d66aa3 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-beta1-55309';
+$wp_version = '6.2-beta1-55310';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.