diff --git a/core/modules/views/tests/src/Kernel/Handler/FieldDateTest.php b/core/modules/views/tests/src/Kernel/Handler/FieldDateTest.php
index 636b400fc9ed40b3eaf5925ab1a75e3d347b4557..397286ff14aa14358dec6c9946762ff169b9eb19 100644
--- a/core/modules/views/tests/src/Kernel/Handler/FieldDateTest.php
+++ b/core/modules/views/tests/src/Kernel/Handler/FieldDateTest.php
@@ -75,7 +75,7 @@ public function testFieldDate() {
         'table' => 'views_test_data',
         'field' => 'created',
         'relationship' => 'none',
-        // ISO 8601 format, see http://php.net/manual/function.date.php
+        // ISO 8601 format, see https://www.php.net/manual/datetime.format.php
         'custom_date_format' => 'c',
       ],
       'destroyed' => [