diff --git a/init.php b/init.php
index c3864c84..6efd71d6 100644
--- a/init.php
+++ b/init.php
@@ -17,7 +17,7 @@
  * License:     GPL-2.0+
  * License URI: http://www.gnu.org/license/gpl-2.0.txt
  * Domain Path: lang
- * Version:     3.5.20
+ * Version:     3.5.21
  */
 
 /*
diff --git a/package-lock.json b/package-lock.json
index 6b18407c..d81866fc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "my-calendar",
-  "version": "3.5.20",
+  "version": "3.5.21",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 1d0f97d2..a4e922ef 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "my-calendar",
-  "version": "3.5.20",
+  "version": "3.5.21",
   "private": true,
   "description": "My Calendar WordPress plug-in.",
   "author": "Joe Dolson",
diff --git a/readme.md b/readme.md
index 78ec69b1..f6a04cb4 100644
--- a/readme.md
+++ b/readme.md
@@ -9,9 +9,9 @@ Accessible Event Manager for WordPress
 * Donate link: https://www.joedolson.com/donate/
 * Tags: calendar, event management, events
 * Requires at least: 4.9
-* Tested up to: 6.6
+* Tested up to: 6.7
 * Requires PHP: 7.4
-* Stable tag: `3.5.20`
+* Stable tag: `3.5.21`
 * License: GPLv2 or later
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
diff --git a/src/my-calendar.php b/src/my-calendar.php
index ce86f891..01b3bfef 100644
--- a/src/my-calendar.php
+++ b/src/my-calendar.php
@@ -17,7 +17,7 @@
  * License:     GPL-2.0+
  * License URI: http://www.gnu.org/license/gpl-2.0.txt
  * Domain Path: lang
- * Version:     3.5.20
+ * Version:     3.5.21
  */
 
 /*
@@ -54,7 +54,7 @@ function mc_get_version( $version = true ) {
 	if ( ! $version ) {
 		return get_option( 'mc_version', '' );
 	}
-	return '3.5.20';
+	return '3.5.21';
 }
 
 define( 'MC_DEBUG', false );
diff --git a/src/readme.txt b/src/readme.txt
index 31e6a40c..e67edc62 100644
--- a/src/readme.txt
+++ b/src/readme.txt
@@ -3,10 +3,10 @@ Contributors: joedolson
 Donate link: https://www.joedolson.com/donate/
 Tags: event manager, event calendar, venue, location, accessibility
 Requires at least: 4.9
-Tested up to: 6.6
+Tested up to: 6.7
 Requires PHP: 7.4
 Text domain: my-calendar
-Stable tag: 3.5.20
+Stable tag: 3.5.21
 License: GPLv2 or later
 
 Accessible WordPress event calendar plugin. Manage single or recurring events, event venues, and display your calendar anywhere on your site.