diff --git a/src/PdoInterface.php b/src/PdoInterface.php
index 4fc4121..f873b87 100644
--- a/src/PdoInterface.php
+++ b/src/PdoInterface.php
@@ -186,5 +186,5 @@ public function setAttribute(int $attribute, mixed $value): bool;
      * @return array
      *
      */
-    public static function getAvailableDrivers();
+    public static function getAvailableDrivers(): array;
 }