diff --git a/src/PhpOption/Option.php b/src/PhpOption/Option.php
index 91fab9c..57fcc03 100644
--- a/src/PhpOption/Option.php
+++ b/src/PhpOption/Option.php
@@ -369,9 +369,10 @@ abstract public function filterNot($callable);
      *
      * In other words, this will filter all but the passed value.
      *
-     * @param T $value
+     * @template S of T
+     * @param S $value
      *
-     * @return Option<T>
+     * @return Option<S>
      */
     abstract public function select($value);