diff --git a/readme.txt b/readme.txt
index a571eb71..1c1bc69e 100644
--- a/readme.txt
+++ b/readme.txt
@@ -2,9 +2,9 @@
 Contributors: takayukister
 Donate link: https://contactform7.com/donate/
 Tags: contact, form, contact form, feedback, email, ajax, captcha, akismet, multilingual
-Requires at least: 5.5
+Requires at least: 5.7
 Tested up to: 5.8
-Stable tag: 5.4.1
+Stable tag: 5.4.2
 License: GPLv2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html
 
@@ -37,6 +37,7 @@ If you activate certain features in this plugin, the contact form submitter's pe
 * Akismet ([Automattic](https://automattic.com/privacy/))
 * Constant Contact ([Endurance International Group](https://www.endurance.com/privacy))
 * [Sendinblue](https://www.sendinblue.com/legal/privacypolicy/)
+* [Stripe](https://stripe.com/privacy)
 
 = Recommended plugins =
 
@@ -76,6 +77,10 @@ Do you have questions or issues with Contact Form 7? Use these support channels
 
 For more information, see [Releases](https://contactform7.com/category/releases/).
 
+= 5.5 =
+
+[https://contactform7.com/contact-form-7-55/](https://contactform7.com/contact-form-7-55/)
+
 = 5.4.2 =
 
 [https://contactform7.com/contact-form-7-542/](https://contactform7.com/contact-form-7-542/)
diff --git a/wp-contact-form-7.php b/wp-contact-form-7.php
index 1d30fa05..ecb9d878 100644
--- a/wp-contact-form-7.php
+++ b/wp-contact-form-7.php
@@ -7,12 +7,12 @@
 Author URI: https://ideasilo.wordpress.com/
 Text Domain: contact-form-7
 Domain Path: /languages/
-Version: 5.4.2
+Version: 5.5
 */
 
-define( 'WPCF7_VERSION', '5.4.2' );
+define( 'WPCF7_VERSION', '5.5' );
 
-define( 'WPCF7_REQUIRED_WP_VERSION', '5.5' );
+define( 'WPCF7_REQUIRED_WP_VERSION', '5.7' );
 
 define( 'WPCF7_TEXT_DOMAIN', 'contact-form-7' );