diff --git a/src/InternalClock.php b/src/InternalClock.php
index 3e30197..7b43c7c 100644
--- a/src/InternalClock.php
+++ b/src/InternalClock.php
@@ -14,6 +14,9 @@
  */
 final class InternalClock implements ClockInterface
 {
+    /**
+     * Returns the current time as a DateTimeImmutable object.
+     */
     public function now(): DateTimeImmutable
     {
         return new DateTimeImmutable();