diff --git a/UPGRADE.md b/UPGRADE.md
index 1a33d5b85af..303c37a6231 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,5 +1,27 @@
 # Upgrade to 2.13
 
+## Deprecated omitting only the alias argument for `QueryBuilder::update` and `QueryBuilder::delete`
+
+When building an UPDATE or DELETE query and when passing a class/type to the function, the alias argument must not be omitted.
+
+### Before
+
+```php
+$qb = $em->createQueryBuilder()
+    ->delete('User u')
+    ->where('u.id = :user_id')
+    ->setParameter('user_id', 1);
+```
+
+### After
+
+```php
+$qb = $em->createQueryBuilder()
+    ->delete('User', 'u')
+    ->where('u.id = :user_id')
+    ->setParameter('user_id', 1);
+```
+
 ## Deprecated using the `IDENTITY` identifier strategy on platform that do not support identity columns
 
 If identity columns are emulated with sequences on the platform you are using,
diff --git a/lib/Doctrine/ORM/QueryBuilder.php b/lib/Doctrine/ORM/QueryBuilder.php
index 3b7e5057614..a0504758a2b 100644
--- a/lib/Doctrine/ORM/QueryBuilder.php
+++ b/lib/Doctrine/ORM/QueryBuilder.php
@@ -6,6 +6,7 @@
 
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Criteria;
+use Doctrine\Deprecations\Deprecation;
 use Doctrine\ORM\Query\Expr;
 use Doctrine\ORM\Query\Parameter;
 use Doctrine\ORM\Query\QueryExpressionVisitor;
@@ -844,6 +845,14 @@ public function delete($delete = null, $alias = null)
             return $this;
         }
 
+        if (! $alias) {
+            Deprecation::trigger(
+                'doctrine/orm',
+                'https://github.com/doctrine/orm/issues/9733',
+                'Omitting the alias is deprecated and will throw an exception in Doctrine 3.0.'
+            );
+        }
+
         return $this->add('from', new Expr\From($delete, $alias));
     }
 
@@ -871,6 +880,14 @@ public function update($update = null, $alias = null)
             return $this;
         }
 
+        if (! $alias) {
+            Deprecation::trigger(
+                'doctrine/orm',
+                'https://github.com/doctrine/orm/issues/9733',
+                'Omitting the alias is deprecated and will throw an exception in Doctrine 3.0.'
+            );
+        }
+
         return $this->add('from', new Expr\From($update, $alias));
     }
 
diff --git a/tests/Doctrine/Tests/ORM/QueryBuilderTest.php b/tests/Doctrine/Tests/ORM/QueryBuilderTest.php
index 950ce55941d..ebbbb1e7e95 100644
--- a/tests/Doctrine/Tests/ORM/QueryBuilderTest.php
+++ b/tests/Doctrine/Tests/ORM/QueryBuilderTest.php
@@ -6,6 +6,7 @@
 
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Criteria;
+use Doctrine\Deprecations\PHPUnit\VerifyDeprecations;
 use Doctrine\ORM\Cache;
 use Doctrine\ORM\Query;
 use Doctrine\ORM\Query\Expr\Join;
@@ -29,6 +30,8 @@
  */
 class QueryBuilderTest extends OrmTestCase
 {
+    use VerifyDeprecations;
+
     /** @var EntityManagerMock */
     private $entityManager;
 
@@ -1279,4 +1282,25 @@ public function testJoin(): void
 
         self::assertSame('SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u LEFT JOIN Doctrine\Tests\Models\CMS\CmsArticle a0 INNER JOIN Doctrine\Tests\Models\CMS\CmsArticle a1', $builder->getDQL());
     }
+
+    public function testUpdateDeprecationMessage(): void
+    {
+        $this->expectDeprecationWithIdentifier('https://github.com/doctrine/orm/issues/9733');
+
+        $qb = $this->entityManager->createQueryBuilder()
+            ->update(CmsUser::class . ' u')
+            ->set('u.username', ':username');
+
+        $this->assertValidQueryBuilder($qb, 'UPDATE Doctrine\Tests\Models\CMS\CmsUser u  SET u.username = :username');
+    }
+
+    public function testDeleteDeprecationMessage(): void
+    {
+        $this->expectDeprecationWithIdentifier('https://github.com/doctrine/orm/issues/9733');
+
+        $qb = $this->entityManager->createQueryBuilder()
+            ->delete(CmsUser::class . ' u');
+
+        $this->assertValidQueryBuilder($qb, 'DELETE Doctrine\Tests\Models\CMS\CmsUser u ');
+    }
 }