diff --git a/plugins/performance-lab/load.php b/plugins/performance-lab/load.php
index 602e25b921..67146438a5 100644
--- a/plugins/performance-lab/load.php
+++ b/plugins/performance-lab/load.php
@@ -5,7 +5,7 @@
  * Description: Performance plugin from the WordPress Performance Team, which is a collection of standalone performance features.
  * Requires at least: 6.5
  * Requires PHP: 7.2
- * Version: 3.3.0
+ * Version: 3.3.1
  * Author: WordPress Performance Team
  * Author URI: https://make.wordpress.org/performance/
  * License: GPLv2 or later
@@ -19,7 +19,7 @@
 	exit; // Exit if accessed directly.
 }
 
-define( 'PERFLAB_VERSION', '3.3.0' );
+define( 'PERFLAB_VERSION', '3.3.1' );
 define( 'PERFLAB_MAIN_FILE', __FILE__ );
 define( 'PERFLAB_PLUGIN_DIR_PATH', plugin_dir_path( PERFLAB_MAIN_FILE ) );
 define( 'PERFLAB_SCREEN', 'performance-lab' );
diff --git a/plugins/performance-lab/readme.txt b/plugins/performance-lab/readme.txt
index e5a3898e72..2cc4c5be1a 100644
--- a/plugins/performance-lab/readme.txt
+++ b/plugins/performance-lab/readme.txt
@@ -2,7 +2,7 @@
 
 Contributors: wordpressdotorg
 Tested up to: 6.6
-Stable tag:   3.3.0
+Stable tag:   3.3.1
 License:      GPLv2 or later
 License URI:  https://www.gnu.org/licenses/gpl-2.0.html
 Tags:         performance, site health, measurement, optimization, diagnostics
@@ -58,6 +58,16 @@ Contributions are always welcome! Learn more about how to get involved in the [C
 
 == Changelog ==
 
+= 3.3.1 =
+
+**Enhancements**
+
+* Add PHPStan strict rules (except for empty.notAllowed). ([1241](https://github.com/WordPress/performance/pull/1241))
+
+**Bug Fixes**
+
+* Allow null to be passed into perflab_admin_pointer(). ([1393](https://github.com/WordPress/performance/pull/1393))
+
 = 3.3.0 =
 
 **Enhancements**