diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
index 5a59182..1fe2b50 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
@@ -6,6 +6,7 @@
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate\Row;
 use Drupal\Tests\migrate\Unit\MigrateTestCase;
+use Symfony\Component\EventDispatcher\EventDispatcher;
 
 /**
  * @coversDefaultClass \Drupal\file\Plugin\migrate\process\d6\FileUri
@@ -68,7 +69,8 @@ public function testTemporary() {
   }
 
   protected function doTransform(array $value) {
-    $executable = new MigrateExecutable($this->getMigration());
+    $event_dispatcher = $this->prophesize(EventDispatcher::class)->reveal();
+    $executable = new MigrateExecutable($this->getMigration(), NULL, $event_dispatcher);
     $row = new Row();
 
     return (new FileUri([], 'file_uri', []))
diff --git a/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php b/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php
index d14e54a..0c210a4 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php
@@ -1,6 +1,7 @@
 <?php
 
 namespace Drupal\Tests\migrate\Unit;
+use Symfony\Component\EventDispatcher\EventDispatcher;
 
 /**
  * Tests the \Drupal\migrate\MigrateExecutable::memoryExceeded() method.
@@ -53,8 +54,9 @@ protected function setUp() {
     parent::setUp();
     $this->migration = $this->getMigration();
     $this->message = $this->getMock('Drupal\migrate\MigrateMessageInterface');
+    $event_dispatcher = $this->prophesize(EventDispatcher::class)->reveal();
 
-    $this->executable = new TestMigrateExecutable($this->migration, $this->message);
+    $this->executable = new TestMigrateExecutable($this->migration, $this->message, $event_dispatcher);
     $this->executable->setStringTranslation($this->getStringTranslationStub());
   }
 
diff --git a/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php b/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
index df41e82..2e037b2 100644
--- a/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
@@ -6,6 +6,7 @@
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate\Row;
 use Drupal\Tests\migrate\Unit\MigrateTestCase;
+use Symfony\Component\EventDispatcher\EventDispatcher;
 
 /**
  * @coversDefaultClass \Drupal\migrate\Plugin\migrate\process\UrlEncode
@@ -55,7 +56,8 @@ public function testUrls($input, $output) {
    *   Encoded URL.
    */
   protected function doTransform($value) {
-    $executable = new MigrateExecutable($this->getMigration());
+    $event_dispatcher = $this->prophesize(EventDispatcher::class)->reveal();
+    $executable = new MigrateExecutable($this->getMigration(), NULL, $event_dispatcher);
     $row = new Row();
 
     return (new UrlEncode([], 'urlencode', []))