diff --git a/tests/Message/HeaderAbstractTest.php b/tests/Message/HeaderAbstractTest.php
index 0140eb4e6..f2f3c9ea3 100755
--- a/tests/Message/HeaderAbstractTest.php
+++ b/tests/Message/HeaderAbstractTest.php
@@ -57,6 +57,11 @@ final class HeaderAbstractTest extends \PHPUnit\Framework\TestCase
             {
                 return true;
             }
+
+            public function getRequestTime() : int
+            {
+                return 0;
+            }
         };
     }