diff --git a/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php b/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
index 2d7d329..127c846 100644
--- a/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
+++ b/core/modules/migrate/src/Plugin/migrate/source/SourcePluginBase.php
@@ -175,6 +175,8 @@ public function __construct(array $configuration, $plugin_id, $plugin_definition
     }
 
     $this->moduleHandler = $module_handler;
+
+    $this->cache = $cache;
   }
 
   /**
diff --git a/core/modules/migrate/tests/src/Unit/MigrateSqlSourceTestCase.php b/core/modules/migrate/tests/src/Unit/MigrateSqlSourceTestCase.php
index b9d003c..b7bf7d4 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateSqlSourceTestCase.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateSqlSourceTestCase.php
@@ -84,17 +84,6 @@
    * {@inheritdoc}
    */
   protected function setUp() {
-    // Mock container services so the plugin can instantiate itself.
-    $container = new ContainerBuilder();
-    $container
-      ->set('module_handler', $this->getMock(ModuleHandlerInterface::class));
-    $container
-      ->set('cache.migrate', $this->getMock(CacheBackendInterface::class));
-    $container
-      ->set('state', $this->getMock(StateInterface::class));
-    $container
-      ->set('entity.manager', $this->getMock(EntityManagerInterface::class));
-
     // Mock a key-value store to return high-water values.
     $key_value = $this->getMock(KeyValueStoreInterface::class);
 
@@ -114,6 +103,14 @@ protected function setUp() {
       $container = new ContainerBuilder();
     }
     $container->set('keyvalue', $key_value_factory);
+    $container
+      ->set('module_handler', $this->getMock(ModuleHandlerInterface::class));
+    $container
+      ->set('cache.migrate', $this->getMock(CacheBackendInterface::class));
+    $container
+      ->set('state', $this->getMock(StateInterface::class));
+    $container
+      ->set('entity.manager', $this->getMock(EntityManagerInterface::class));
     \Drupal::setContainer($container);
 
     $migration = $this->getMigration();
diff --git a/core/modules/node/src/Plugin/migrate/source/d6/Node.php b/core/modules/node/src/Plugin/migrate/source/d6/Node.php
index 2e4d1a6..8ef24f6 100644
--- a/core/modules/node/src/Plugin/migrate/source/d6/Node.php
+++ b/core/modules/node/src/Plugin/migrate/source/d6/Node.php
@@ -2,6 +2,7 @@
 
 namespace Drupal\node\Plugin\migrate\source\d6;
 
+use Drupal\Core\Cache\CacheBackendInterface;
 use Drupal\Core\Database\Query\SelectInterface;
 use Drupal\Core\Entity\EntityManagerInterface;
 use Drupal\Core\Extension\ModuleHandler;
@@ -49,8 +50,8 @@ class Node extends DrupalSqlBase {
   /**
    * {@inheritdoc}
    */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, StateInterface $state, EntityManagerInterface $entity_manager, ModuleHandler $module_handler) {
-    parent::__construct($configuration, $plugin_id, $plugin_definition, $migration, $state, $entity_manager);
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, StateInterface $state, EntityManagerInterface $entity_manager, ModuleHandler $module_handler, CacheBackendInterface $cache) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition, $migration, $module_handler, $cache, $state, $entity_manager);
     $this->moduleHandler = $module_handler;
   }
 
@@ -65,7 +66,8 @@ public static function create(ContainerInterface $container, array $configuratio
       $migration,
       $container->get('state'),
       $container->get('entity.manager'),
-      $container->get('module_handler')
+      $container->get('module_handler'),
+      $container->get('cache.migrate')
     );
   }