diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3deca9c..ef6a28c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,26 @@ All notable changes to WooCommerce Tier and Package Prices will be documented in
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.1.17] - 2025-12-22
+
+### Fixed
+
+- Settings page still rendering twice despite singleton pattern in v1.1.16
+- Filter adding settings instance to array multiple times when called repeatedly
+
+### Changed
+
+- Added duplicate detection in `add_settings_page()` filter method
+- Filter now checks if settings instance already exists in array before adding
+
+### Technical Details
+
+- Added foreach loop to check existing settings pages in array
+- Uses strict comparison (`===`) to detect if exact instance already present
+- Returns early if settings instance found, preventing duplicate array entries
+- Complements singleton pattern from v1.1.16 with array-level duplicate prevention
+- Handles edge case where WooCommerce calls filter multiple times
+
 ## [1.1.16] - 2025-12-22
 
 ### Fixed
diff --git a/composer.json b/composer.json
index cb3e94d..cefa5e6 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "magdev/wc-tier-package-prices",
     "description": "WooCommerce plugin for tier pricing and package prices with Twig templates",
-    "version": "1.1.16",
+    "version": "1.1.17",
     "type": "wordpress-plugin",
     "license": "GPL-2.0-or-later",
     "authors": [
diff --git a/includes/class-wc-tpp-admin.php b/includes/class-wc-tpp-admin.php
index 3bde1d0..96b9241 100644
--- a/includes/class-wc-tpp-admin.php
+++ b/includes/class-wc-tpp-admin.php
@@ -32,6 +32,14 @@ if (!class_exists('WC_TPP_Admin')) {
         if (null === self::$settings_instance) {
             self::$settings_instance = include WC_TPP_PLUGIN_DIR . 'includes/class-wc-tpp-settings.php';
         }
+
+        // Check if our settings page is already in the array to prevent duplicates
+        foreach ($settings as $settings_page) {
+            if ($settings_page === self::$settings_instance) {
+                return $settings;
+            }
+        }
+
         $settings[] = self::$settings_instance;
         return $settings;
     }
diff --git a/wc-tier-and-package-prices.php b/wc-tier-and-package-prices.php
index 505b7c3..7c808a0 100644
--- a/wc-tier-and-package-prices.php
+++ b/wc-tier-and-package-prices.php
@@ -4,7 +4,7 @@
  * Plugin Name: WooCommerce Tier and Package Prices
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wc-tier-package-prices
  * Description: Add tier pricing and package prices to WooCommerce products with configurable quantities at fixed prices
- * Version: 1.1.16
+ * Version: 1.1.17
  * Author: Marco Graetsch
  * Author URI: https://src.bundespruefstelle.ch/magdev
  * Text Domain: wc-tier-package-prices
@@ -23,7 +23,7 @@ if (!defined('ABSPATH')) {
 
 // Define plugin constants
 if (!defined('WC_TPP_VERSION')) {
-    define('WC_TPP_VERSION', '1.1.16');
+    define('WC_TPP_VERSION', '1.1.17');
 }
 if (!defined('WC_TPP_PLUGIN_DIR')) {
     define('WC_TPP_PLUGIN_DIR', plugin_dir_path(__FILE__));