diff --git a/.github/workflows/test-php.yml b/.github/workflows/test-php.yml
index d4b6317..b8b0af0 100644
--- a/.github/workflows/test-php.yml
+++ b/.github/workflows/test-php.yml
@@ -47,7 +47,7 @@ jobs:
       - name: Setup PHP version
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '7.1'
+          php-version: '7.2'
           extensions: simplexml, mysql
           tools: phpunit-polyfills
       - name: Checkout source code
@@ -69,4 +69,4 @@ jobs:
       - name: Install composer
         run: composer install --prefer-dist --no-progress --no-suggest
       - name: Run phpunit
-        run: phpunit
+        run: composer run-script phpunit
diff --git a/.gitignore b/.gitignore
index fab41ab..48ff83e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ assets/js/build
 languages/neve-fse.pot
 
 .DS_Store
+.phpunit.result.cache
diff --git a/assets/js/src/welcome-notice.js b/assets/js/src/welcome-notice.js
index 946088f..df170f8 100644
--- a/assets/js/src/welcome-notice.js
+++ b/assets/js/src/welcome-notice.js
@@ -10,6 +10,7 @@ function handleWelcomeNotice( $ ) {
 		activationUrl,
 		ajaxUrl,
 		nonce,
+		otterRefNonce,
 		otterStatus,
 	} = neveFSEData;
 
@@ -30,6 +31,12 @@ function handleWelcomeNotice( $ ) {
 	const activateOtter = async () => {
 		installText.text( activating );
 		await activatePlugin( activationUrl );
+
+		await $.post( ajaxUrl, {
+			nonce: otterRefNonce,
+			action: 'neve_fse_set_otter_ref',
+		} );
+
 		installSpinner.removeClass( 'dashicons-update' );
 		installSpinner.addClass( 'dashicons-yes' );
 		installText.text( done );
diff --git a/composer.json b/composer.json
index ae2652e..b303f96 100644
--- a/composer.json
+++ b/composer.json
@@ -51,6 +51,7 @@
         "format": "phpcbf --standard=phpcs.xml --report-summary --report-source -s  --runtime-set testVersion 7.0- ",
         "phpcs": "phpcs --standard=phpcs.xml -s  --runtime-set testVersion 7.0-",
         "lint": "composer run-script phpcs",
-        "phpcs-i": "phpcs -i"
+        "phpcs-i": "phpcs -i",
+        "phpunit": "phpunit"
     }
 }
diff --git a/composer.lock b/composer.lock
index db4cdef..51f9498 100644
--- a/composer.lock
+++ b/composer.lock
@@ -8,16 +8,16 @@
     "packages": [
         {
             "name": "codeinwp/themeisle-sdk",
-            "version": "3.3.23",
+            "version": "3.3.28",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Codeinwp/themeisle-sdk.git",
-                "reference": "24d9c93386b5b3f50673ab2433249cdede48cc6e"
+                "reference": "cd35fd5356ba169b9a0419ba879764ffeb811b63"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Codeinwp/themeisle-sdk/zipball/24d9c93386b5b3f50673ab2433249cdede48cc6e",
-                "reference": "24d9c93386b5b3f50673ab2433249cdede48cc6e",
+                "url": "https://api.github.com/repos/Codeinwp/themeisle-sdk/zipball/cd35fd5356ba169b9a0419ba879764ffeb811b63",
+                "reference": "cd35fd5356ba169b9a0419ba879764ffeb811b63",
                 "shasum": ""
             },
             "require-dev": {
@@ -42,9 +42,9 @@
             ],
             "support": {
                 "issues": "https://github.com/Codeinwp/themeisle-sdk/issues",
-                "source": "https://github.com/Codeinwp/themeisle-sdk/tree/v3.3.23"
+                "source": "https://github.com/Codeinwp/themeisle-sdk/tree/v3.3.28"
             },
-            "time": "2024-06-19T13:18:20+00:00"
+            "time": "2024-08-09T08:54:15+00:00"
         }
     ],
     "packages-dev": [
@@ -1962,16 +1962,16 @@
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "3.9.0",
+            "version": "3.10.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPCSStandards/PHP_CodeSniffer.git",
-                "reference": "d63cee4890a8afaf86a22e51ad4d97c91dd4579b"
+                "reference": "86e5f5dd9a840c46810ebe5ff1885581c42a3017"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/d63cee4890a8afaf86a22e51ad4d97c91dd4579b",
-                "reference": "d63cee4890a8afaf86a22e51ad4d97c91dd4579b",
+                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/86e5f5dd9a840c46810ebe5ff1885581c42a3017",
+                "reference": "86e5f5dd9a840c46810ebe5ff1885581c42a3017",
                 "shasum": ""
             },
             "require": {
@@ -2038,7 +2038,7 @@
                     "type": "open_collective"
                 }
             ],
-            "time": "2024-02-16T15:06:51+00:00"
+            "time": "2024-07-21T23:26:44+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
diff --git a/inc/Admin.php b/inc/Admin.php
index 6e9a701..b56eb3a 100644
--- a/inc/Admin.php
+++ b/inc/Admin.php
@@ -22,6 +22,13 @@ class Admin {
 	 */
 	private $suspend_survey = true;
 
+	/**
+	 * Otter reference key.
+	 *
+	 * @var string
+	 */
+	const OTTER_REF = 'otter_reference_key';
+
 	/**
 	 * Admin constructor.
 	 */
@@ -60,6 +67,7 @@ public function setup_admin_hooks() {
 		add_action( 'enqueue_block_editor_assets', array( $this, 'add_fse_design_pack_notice' ) );
 		add_action( 'wp_ajax_neve_fse_dismiss_design_pack_notice', array( $this, 'remove_design_pack_notice' ) );
 		add_action( 'activated_plugin', 'after_otter_activation' );
+		add_action( 'wp_ajax_neve_fse_set_otter_ref', array( $this, 'set_otter_ref' ) );
 	}
 
 	/**
@@ -79,11 +87,12 @@ public function add_fse_design_pack_notice() {
 			true,
 			array(),
 			array(
-				'nonce'      => wp_create_nonce( 'neve-fse-dismiss-design-pack-notice' ),
-				'ajaxUrl'    => esc_url( admin_url( 'admin-ajax.php' ) ),
-				'ajaxAction' => 'neve_fse_dismiss_design_pack_notice',
-				'buttonLink' => tsdk_utmify( 'https://themeisle.com/plugins/fse-design-pack', 'editor', 'neve-fse' ),
-				'strings'    => array(
+				'nonce'         => wp_create_nonce( 'neve-fse-dismiss-design-pack-notice' ),
+				'otterRefNonce' => wp_create_nonce( 'neve-fse-set-otter-ref' ),
+				'ajaxUrl'       => esc_url( admin_url( 'admin-ajax.php' ) ),
+				'ajaxAction'    => 'neve_fse_dismiss_design_pack_notice',
+				'buttonLink'    => tsdk_utmify( 'https://themeisle.com/plugins/fse-design-pack', 'editor', 'neve-fse' ),
+				'strings'       => array(
 					'dismiss'    => __( 'Dismiss', 'neve-fse' ),
 					'recommends' => __( 'Neve FSE recommends', 'neve-fse' ),
 					'learnMore'  => __( 'Learn More', 'neve-fse' ),
@@ -467,6 +476,21 @@ public function after_otter_activation( $plugin ) {
 
 		wp_safe_redirect( $onboarding );
 		exit;
+  }
+
+	/**
+	 * Update Otter reference key.
+	 *
+	 * @return void
+	 */
+	public function set_otter_ref() {
+		if ( empty( $_POST['nonce'] ) || ! wp_verify_nonce( sanitize_text_field( $_POST['nonce'] ), 'neve-fse-set-otter-ref' ) ) {
+			return;
+		}
+
+		update_option( self::OTTER_REF, 'neve-fse' );
+
+		wp_send_json_success();
 	}
 
 	/**
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 6f688bf..cf809b1 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -8,6 +8,11 @@
 define( 'NEVE_FSE_IGNORE_SOURCE_CHECK', true );
 
 $_tests_dir = getenv( 'WP_TESTS_DIR' );
+
+if ( class_exists( '\Yoast\PHPUnitPolyfills\Autoload' ) === false ) {
+	require_once dirname( dirname( __FILE__ ) ) . '/vendor/yoast/phpunit-polyfills/phpunitpolyfills-autoload.php';
+}
+
 if ( ! $_tests_dir ) {
 	$_tests_dir = '/tmp/wordpress-tests-lib';
 }