diff --git a/src/Credentials/Token.php b/src/Credentials/Token.php
index 7d2118d..cf7e6d3 100644
--- a/src/Credentials/Token.php
+++ b/src/Credentials/Token.php
@@ -34,7 +34,7 @@ public static function getApimToken()
         });
     }
 
-    public static function forget()
+    public static function forget(): void
     {
         cache()->forget('apim-token');
         cache()->forget('sso-token');