diff --git a/core/modules/simpletest/simpletest.api.php b/core/modules/simpletest/simpletest.api.php
index 9b9014e5ad..5e75f66ddd 100644
--- a/core/modules/simpletest/simpletest.api.php
+++ b/core/modules/simpletest/simpletest.api.php
@@ -40,8 +40,8 @@ function hook_simpletest_alter(&$groups) {
  * This hook is only invoked by the Simpletest UI form runner. It will not be
  * invoked by run-tests.sh or the phpunit tool.
  *
- * @deprecated in Drupal 8.7.x and will be removed before Drupal 9.0.0. Convert
- *   your test to a PHPUnit-based one and implement test listeners.
+ * @deprecated in drupal:8.8.0 and is removed from drupal:9.0.0. Convert your
+ *   test to a PHPUnit-based one and implement test listeners.
  *
  * @see https://www.drupal.org/node/2934242
  */
@@ -56,8 +56,8 @@ function hook_test_group_started() {
  * This hook is only invoked by the Simpletest UI form runner. It will not be
  * invoked by run-tests.sh or the phpunit tool.
  *
- * @deprecated in Drupal 8.7.x and will be removed before Drupal 9.0.0. Convert
- *   your test to a PHPUnit-based one and implement test listeners.
+ * @deprecated in drupal:8.8.0 and is removed from drupal:9.0.0. Convert your
+ *   test to a PHPUnit-based one and implement test listeners.
  *
  * @see https://www.drupal.org/node/2934242
  */
@@ -78,8 +78,8 @@ function hook_test_group_finished() {
  *
  * @see \Drupal\simpletest\WebTestBase::results()
  *
- * @deprecated in Drupal 8.7.x and will be removed before Drupal 9.0.0. Convert
- *   your test to a PHPUnit-based one and implement test listeners.
+ * @deprecated in drupal:8.8.0 and is removed from drupal:9.0.0. Convert your
+ *   test to a PHPUnit-based one and implement test listeners.
  *
  * @see https://www.drupal.org/node/2934242
  */
diff --git a/core/modules/simpletest/tests/src/Kernel/TestDeprecatedTestHooks.php b/core/modules/simpletest/tests/src/Kernel/TestDeprecatedTestHooks.php
index 28f129d244..c578de6991 100644
--- a/core/modules/simpletest/tests/src/Kernel/TestDeprecatedTestHooks.php
+++ b/core/modules/simpletest/tests/src/Kernel/TestDeprecatedTestHooks.php
@@ -83,7 +83,7 @@ public function testHookTestFinished() {
       ->disableOriginalConstructor()
       ->setMethods(['registerTestNamespaces'])
       ->getMock();
-    $discovery->expects($this->any())
+    $discovery->expects($this->once())
       ->method('registerTestNamespaces')
       ->willReturn([]);