diff --git a/mailpoet.php b/mailpoet.php
index c5c38d8b07..116e74b0d4 100644
--- a/mailpoet.php
+++ b/mailpoet.php
@@ -4,7 +4,7 @@ if(!defined('ABSPATH')) exit;
 
 /*
  * Plugin Name: MailPoet
- * Version: 3.0.0-beta.20
+ * Version: 3.0.0-beta.21
  * Plugin URI: http://www.mailpoet.com
  * Description: Create and send beautiful email newsletters, autoresponders, and post notifications without leaving WordPress. This is a beta version of our brand new plugin!
  * Author: MailPoet
@@ -21,7 +21,7 @@ if(!defined('ABSPATH')) exit;
  */
 
 $mailpoet_plugin = array(
-  'version' => '3.0.0-beta.20',
+  'version' => '3.0.0-beta.21',
   'filename' => __FILE__,
   'path' => dirname(__FILE__),
   'autoloader' => dirname(__FILE__) . '/vendor/autoload.php',
diff --git a/readme.txt b/readme.txt
index 8aa3b476e3..7f8e40377a 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Contributors: mailpoet, wysija
 Tags: newsletter, email, welcome email, post notification, autoresponder, signup, smtp
 Requires at least: 4.6
 Tested up to: 4.7.2
-Stable tag: 3.0.0-beta.20
+Stable tag: 3.0.0-beta.21
 Create and send beautiful emails and newsletters from WordPress.
 
 == Description ==
@@ -83,6 +83,12 @@ Our [support site](https://docs.mailpoet.com/) has plenty of articles. You can w
 
 == Changelog ==
 
+= 3.0.0-beta.21 - 2017-02-28 =
+- Fixed: newsletter sending process will fully stop when sending is paused. Thanks Terry!
+- Fixed: MailPoet sending method will work on sites using PHP 5.3. Thanks Jeff!
+- Fixed: bulk trashing and restoring newsletters and forms will work on sites using PHP 5.3. Thanks Scott!
+- We recommend all of you to upgrade to PHP 7. It's faster, more reliable, and safer. It's just a question of asking your host to switch.
+
 = 3.0.0-beta.20 - 2017-02-23 =
 * Fixed: scheduling options are properly saved when creating a new or re-saving an existing email. Thx Oskar!;
 * Fixed: sending is not interrupted when a post included in the email is trashed. Thanks Bernhard!