diff --git a/.travis.yml b/.travis.yml
index 7c8c2f5..f349288 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,13 +5,11 @@ sudo: false
 dist: trusty
 
 php:
-- 5.4
-- 5.5
 - 5.6
 - 7.0
 - 7.1
 - 7.2
-# - 7.3
+- 7.3
 
 env:
   - WP_VERSION=latest WC_VERSION=latest WC_BRANCH=master WP_MULTISITE=0
diff --git a/includes/class-ss-wc-mailchimp-plugin.php b/includes/class-ss-wc-mailchimp-plugin.php
index c922095..834484b 100755
--- a/includes/class-ss-wc-mailchimp-plugin.php
+++ b/includes/class-ss-wc-mailchimp-plugin.php
@@ -15,7 +15,7 @@ final class SS_WC_MailChimp_Plugin {
 	 *
 	 * @var string
 	 */
-	private static $version = '2.1.21';
+	private static $version = '2.2.0';
 
 	/**
 	 * Plugin singleton instance
@@ -316,13 +316,13 @@ public function mailchimp( $api_key = null, $debug = false ) {
 	private function define_constants() {
 
 		// Minimum supported version of WordPress.
-		$this->define( 'SS_WC_MAILCHIMP_MIN_WP_VERSION', '3.5.1' );
+		$this->define( 'SS_WC_MAILCHIMP_MIN_WP_VERSION', '4.7.0' );
 
 		// Minimum supported version of WooCommerce.
-		$this->define( 'SS_WC_MAILCHIMP_MIN_WC_VERSION', '2.2.0' );
+		$this->define( 'SS_WC_MAILCHIMP_MIN_WC_VERSION', '3.5.0' );
 
 		// Minimum supported version of PHP.
-		$this->define( 'SS_WC_MAILCHIMP_MIN_PHP_VERSION', '5.4.0' );
+		$this->define( 'SS_WC_MAILCHIMP_MIN_PHP_VERSION', '5.6.0' );
 
 		// Plugin version.
 		$this->define( 'SS_WC_MAILCHIMP_VERSION', self::version() );
diff --git a/readme.txt b/readme.txt
index b7bc16c..f6a2bca 100644
--- a/readme.txt
+++ b/readme.txt
@@ -2,10 +2,10 @@
 Contributors: saintsystems, anderly
 Donate link: http://ssms.us/hVdk
 Tags: woocommerce, mailchimp
-Requires at least: 3.5.1
+Requires at least: 4.7.0
 Tested up to: 5.2.2
 WC tested up to: 3.6.5
-Stable tag: 2.1.21
+Stable tag: 2.2.0
 License: GPLv3
 
 Simple and flexible MailChimp integration for WooCommerce.
@@ -73,7 +73,7 @@ If no custom translations are present, languages will be loaded in the following
 
 = Requirements =
 
-WooCommerce MailChimp requires PHP 5.4+ (PHP 7.0+ recommended). You'll also need to be running WordPress 3.5.1+ and have WooCommerce 2.2+.
+WooCommerce MailChimp requires PHP 5.6+ (PHP 7.0+ recommended). You'll also need to be running WordPress 4.7.0+ and have WooCommerce 3.5.0+.
 
 = Documentation & Support =
 
@@ -114,6 +114,10 @@ Also, if you enjoy using the software [we'd love it if you could give us a revie
 
 == Changelog ==
 
+#### 2.2.0 - July 23, 2019
+- Bump min WC version to 3.5.0, and min WP version to 4.7.0.
+- Bump min PHP version to 5.6 in prep for WooCoommerce 3.7 requirements.
+
 #### 2.1.21 - July 23, 2019
 - Prep for getting list tags.
 
diff --git a/woocommerce-mailchimp.php b/woocommerce-mailchimp.php
index e1ebcd3..bf7418c 100755
--- a/woocommerce-mailchimp.php
+++ b/woocommerce-mailchimp.php
@@ -5,7 +5,7 @@
  * Description: WooCommerce MailChimp provides simple MailChimp integration for WooCommerce.
  * Author: Saint Systems
  * Author URI: https://www.saintsystems.com
- * Version: 2.1.21
+ * Version: 2.2.0
  * WC tested up to: 3.6.5
  * Text Domain: woocommerce-mailchimp
  * Domain Path: languages