diff --git a/plausible-analytics.php b/plausible-analytics.php
index c4ba2cc..6c0a9f5 100644
--- a/plausible-analytics.php
+++ b/plausible-analytics.php
@@ -5,7 +5,7 @@
  * Description: Simple and privacy-friendly alternative to Google Analytics.
  * Author: Plausible.io
  * Author URI: https://plausible.io
- * Version: 1.3.0
+ * Version: 1.3.1
  * Text Domain: plausible-analytics
  * Domain Path: /languages
  *
diff --git a/readme.txt b/readme.txt
index 7792cf4..50fff2f 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,7 +5,7 @@ Tags: analytics, google analytics, web analytics, stats, privacy, privacy friend
 Requires at least: 4.8
 Tested up to: 6.2
 Requires PHP: 5.6
-Stable tag: 1.3.0
+Stable tag: 1.3.1
 License: Massachusetts Institute of Technology (MIT) license
 License URI: https://opensource.org/licenses/MIT
 
@@ -155,6 +155,12 @@ Please make sure you make a backup of your database before updating any version
 
 == Changelog ==
 
+= 1.3.1 =
+- Added: 404 error pages option to Enhanced Measurements
+- Added: Autoptimize compatibility
+- Fixed: remove `defer` attribute from script when Proxy is enabled.
+  - Fixes 404 tracking error when Proxy is enabled.
+
 = 1.3.0 =
 - Added: Bypass Ad Blockers option.
 - Added: The `PLAUSIBLE_SELF_HOSTED_DOMAIN` constant can be used to define the Self-hosted URL (this is convenient for Multisites)