diff --git a/spotify-mini-player/vendor/jwilsson/spotify-web-api-php/src/SpotifyWebAPIAuthException.php b/spotify-mini-player/vendor/jwilsson/spotify-web-api-php/src/SpotifyWebAPIAuthException.php
index 5f65b1a0..b02659e6 100644
--- a/spotify-mini-player/vendor/jwilsson/spotify-web-api-php/src/SpotifyWebAPIAuthException.php
+++ b/spotify-mini-player/vendor/jwilsson/spotify-web-api-php/src/SpotifyWebAPIAuthException.php
@@ -7,16 +7,16 @@
 // Extends from SpotifyWebApiException for backwards compatibility
 class SpotifyWebAPIAuthException extends SpotifyWebAPIException
 {
-    const INVALID_CLIENT = 'Invalid client';
-    const INVALID_CLIENT_SECRET = 'Invalid client secret';
-    const INVALID_REFRESH_TOKEN = 'Invalid refresh token';
+    public const INVALID_CLIENT = 'Invalid client';
+    public const INVALID_CLIENT_SECRET = 'Invalid client secret';
+    public const INVALID_REFRESH_TOKEN = 'Invalid refresh token';
 
     /**
      * Returns whether the exception was thrown because of invalid credentials.
      *
      * @return bool
      */
-    public function hasInvalidCredentials()
+    public function hasInvalidCredentials(): bool
     {
         return in_array($this->getMessage(), [
             self::INVALID_CLIENT,
@@ -29,7 +29,7 @@ public function hasInvalidCredentials()
      *
      * @return bool
      */
-    public function hasInvalidRefreshToken()
+    public function hasInvalidRefreshToken(): bool
     {
         return $this->getMessage() === self::INVALID_REFRESH_TOKEN;
     }