diff --git a/modules/acquia_telemetry/tests/src/Kernel/TelemetryTest.php b/modules/acquia_telemetry/tests/src/Kernel/TelemetryTest.php
index fe90be8..fed9700 100644
--- a/modules/acquia_telemetry/tests/src/Kernel/TelemetryTest.php
+++ b/modules/acquia_telemetry/tests/src/Kernel/TelemetryTest.php
@@ -29,7 +29,7 @@ class TelemetryTest extends KernelTestBase {
     $this->assertFalse($telemetry->sendTelemetry('Foobaz'));
 
     $this->container->get('state')->set('acquia_telemetry.loud', TRUE);
-    $this->setExpectedException('Exception');
+    $this->expectException('Exception');
     $telemetry->sendTelemetry('Blow up real good!');
   }
 
diff --git a/modules/lightning_search/lightning_search.install b/modules/lightning_search/lightning_search.install
index 68e3d0a..a053ee8 100644
--- a/modules/lightning_search/lightning_search.install
+++ b/modules/lightning_search/lightning_search.install
@@ -16,7 +16,7 @@ use Drupal\search_api\Entity\Server;
 function lightning_search_install() {
   // Search API DB is not a hard dependency, but install it if it's available so
   // that the search index we provide will "just work" out of the box.
-  $module_data = system_rebuild_module_data();
+  $module_data = \Drupal::service('extension.list.module')->reset()->getList();
   if (isset($module_data['search_api_db'])) {
     \Drupal::service('module_installer')->install(['search_api_db']);
   }
diff --git a/tests/src/Kernel/EntityDescriptionTest.php b/tests/src/Kernel/EntityDescriptionTest.php
index 1dae192..67738ae 100644
--- a/tests/src/Kernel/EntityDescriptionTest.php
+++ b/tests/src/Kernel/EntityDescriptionTest.php
@@ -63,7 +63,7 @@ class EntityDescriptionTest extends KernelTestBase {
         ->get('entity.form_builder')
         ->getForm($entity, $form_operation);
 
-      $this->assertInternalType('array', $form['description']);
+      $this->assertIsArray($form['description']);
       $this->assertEquals($description, $form['description']['#default_value']);
     }
   }
diff --git a/tests/src/Kernel/Update/Update360Test.php b/tests/src/Kernel/Update/Update360Test.php
index ec764d9..7184892 100644
--- a/tests/src/Kernel/Update/Update360Test.php
+++ b/tests/src/Kernel/Update/Update360Test.php
@@ -46,8 +46,8 @@ class Update360Test extends KernelTestBase {
 
     $display = lightning_core_entity_get_display('user', 'user', 'compact');
     $this->assertFalse($display->isNew());
-    $this->assertInternalType('array', $display->getComponent('name'));
-    $this->assertInternalType('array', $display->getComponent('user_picture'));
+    $this->assertIsArray($display->getComponent('name'));
+    $this->assertIsArray($display->getComponent('user_picture'));
   }
 
 }