diff --git a/CHANGELOG.md b/CHANGELOG.md
index 88f15e6..a335471 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 All notable changes to **Traffic** are documented in this *changelog*.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and **Traffic** adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+ 
+## [3.1.1] - 2024-11-23
+
+### Fixed
+- There's an 'undefined constant' error while trying to update.
 
 ## [3.1.0] - 2024-11-22
 
diff --git a/includes/plugin/class-updater.php b/includes/plugin/class-updater.php
index 669692c..844c7b9 100644
--- a/includes/plugin/class-updater.php
+++ b/includes/plugin/class-updater.php
@@ -30,13 +30,13 @@
  */
 class Updater {
 
-	private $name = POKM_PRODUCT_NAME;
+	private $name = TRAFFIC_PRODUCT_NAME;
 
-	private $slug = POKM_SLUG;
+	private $slug = TRAFFIC_SLUG;
 
-	private $version = POKM_VERSION;
+	private $version = TRAFFIC_VERSION;
 
-	private $product = POKM_PRODUCT_URL;
+	private $product = TRAFFIC_PRODUCT_URL;
 
 	/**
 	 * Initializes the class, set its properties and performs
diff --git a/init.php b/init.php
index 3547dff..05a597a 100644
--- a/init.php
+++ b/init.php
@@ -12,7 +12,7 @@
 define( 'TRAFFIC_PRODUCT_SHORTNAME', 'Traffic' );
 define( 'TRAFFIC_PRODUCT_ABBREVIATION', 'traffic' );
 define( 'TRAFFIC_SLUG', 'traffic' );
-define( 'TRAFFIC_VERSION', '3.1.0' );
+define( 'TRAFFIC_VERSION', '3.1.1' );
 define( 'TRAFFIC_API_VERSION', '2' );
 define( 'TRAFFIC_CODENAME', '"-"' );
 
@@ -28,4 +28,4 @@
 	} else {
 		define( 'TRAFFIC_INBOUND_CHRONO', microtime( true ) );
 	}
-}
+}
\ No newline at end of file
diff --git a/readme.txt b/readme.txt
index 275bdc5..6bb9446 100755
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Tags: api, analytics, reports, rest-api, statistics
 Requires at least: 6.2
 Requires PHP: 8.1
 Tested up to: 6.7
-Stable tag: 3.1.0
+Stable tag: 3.1.1
 License: GPLv3
 License URI: https://www.gnu.org/licenses/gpl-3.0.html
 
diff --git a/traffic.php b/traffic.php
index 7d1d6b4..6fe63d7 100644
--- a/traffic.php
+++ b/traffic.php
@@ -10,7 +10,7 @@
  * Plugin Name:       Traffic
  * Plugin URI:        https://perfops.one/traffic
  * Description:       Full featured monitoring & analytics for WordPress APIs.
- * Version:           3.1.0
+ * Version:           3.1.1
  * Requires at least: 6.2
  * Requires PHP:      8.1
  * Author:            Pierre Lannoy / PerfOps One