diff --git a/src/Drivers/Decorator.php b/src/Drivers/Decorator.php
index e2e70e9..96767eb 100644
--- a/src/Drivers/Decorator.php
+++ b/src/Drivers/Decorator.php
@@ -74,6 +74,8 @@ class Decorator implements CanListStoredFeatures, Driver
 
     /**
      * Map of feature names to their implementations.
+     *
+     * @var array<string, mixed>
      */
     protected $nameMap = [];