diff --git a/README.md b/README.md
index 390596c..5c6df7f 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ and beyond, but they will all be optional and fully backwards-compatible.
 
 ### How can I use this plugin with an unsupported version of WordPress?
 
-This plugin currently supports migrating from WordPress 4.9.0 through 5.0.2, as
+This plugin currently supports migrating from WordPress 4.9.0 through 5.0.3, as
 well as a few newer development versions.
 
 If you would like to migrate from a different version of WordPress **at your
diff --git a/lib/admin-page.php b/lib/admin-page.php
index de45659..d343277 100644
--- a/lib/admin-page.php
+++ b/lib/admin-page.php
@@ -315,7 +315,7 @@ function classicpress_check_can_migrate() {
 	// More versions can be added after they are confirmed to work.
 	global $wp_version;
 	$wp_version_min = '4.9.0';
-	$wp_version_max = '5.0.2';
+	$wp_version_max = '5.0.3';
 	$wp_version_check_intro_message = sprintf( __(
 		/* translators: 1: minimum supported WordPress version, 2: maximum supported WordPress version */
 		'This plugin supports WordPress versions <strong>%1$s</strong> to <strong>%2$s</strong> (and some newer development versions).',
diff --git a/switch-to-classicpress.php b/switch-to-classicpress.php
index dcb4697..111263a 100644
--- a/switch-to-classicpress.php
+++ b/switch-to-classicpress.php
@@ -4,7 +4,7 @@
  * Plugin URI:        https://github.com/ClassicPress/ClassicPress-Migration-Plugin
  * Description:       Switch your WordPress installation to ClassicPress.
  * Version:           0.5.1
- * Tested up to:      5.0.2
+ * Tested up to:      5.0.3
  * Author:            ClassicPress
  * Author URI:        https://www.classicpress.net
  * License:           GPLv2 or later