diff --git a/src/Symfony/Component/DependencyInjection/Loader/schema/dic/services/services-1.0.xsd b/src/Symfony/Component/DependencyInjection/Loader/schema/dic/services/services-1.0.xsd
index 4f85f41035d8e..2f745c3326d49 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/schema/dic/services/services-1.0.xsd
+++ b/src/Symfony/Component/DependencyInjection/Loader/schema/dic/services/services-1.0.xsd
@@ -222,6 +222,7 @@
     <xsd:attribute name="key" type="xsd:string" use="required" />
     <xsd:attribute name="on-invalid" type="invalid_sequence" />
     <xsd:attribute name="method" type="xsd:string" />
+    <xsd:attribute name="tag" type="xsd:string" />
   </xsd:complexType>
 
   <xsd:complexType name="argument" mixed="true">
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php
index 1aaca2f1560c9..7e1a30b5ffa07 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/Bar.php
@@ -15,7 +15,7 @@ class Bar implements BarInterface
 {
     public $quz;
 
-    public function __construct($quz = null, \NonExistent $nonExistent = null, BarInterface $decorated = null, array $foo = [])
+    public function __construct($quz = null, \NonExistent $nonExistent = null, BarInterface $decorated = null, array $foo = [], iterable $baz = [])
     {
         $this->quz = $quz;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services_bindings.xml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services_bindings.xml
index 8e4486c0ba67e..e111af4fcee26 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services_bindings.xml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/xml/services_bindings.xml
@@ -12,6 +12,7 @@
             <bind key="$foo" type="collection">
                 <bind>null</bind>
             </bind>
+            <bind key="iterable $baz" type="tagged_iterator" tag="bar"/>
         </service>
 
         <service id="Symfony\Component\DependencyInjection\Tests\Fixtures\Bar">
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services_bindings.yml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services_bindings.yml
index 0eba120b586e2..31eec7e2ebdac 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services_bindings.yml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services_bindings.yml
@@ -12,6 +12,7 @@ services:
         bind:
             Symfony\Component\DependencyInjection\Tests\Fixtures\BarInterface: '@Symfony\Component\DependencyInjection\Tests\Fixtures\Bar'
             $foo: [ ~ ]
+            iterable $baz: !tagged_iterator bar
 
     Symfony\Component\DependencyInjection\Tests\Fixtures\Bar:
         factory: [ ~, 'create' ]
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
index 2c5386572a439..14ba4c7f6e567 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php
@@ -879,12 +879,14 @@ public function testBindings()
             '$foo' => [null],
             '$quz' => 'quz',
             '$factory' => 'factory',
+            'iterable $baz' => new TaggedIteratorArgument('bar'),
         ], array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
         $this->assertEquals([
             'quz',
             null,
             new Reference(Bar::class),
             [null],
+            new TaggedIteratorArgument('bar'),
         ], $definition->getArguments());
 
         $definition = $container->getDefinition(Bar::class);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
index c35f36567b618..fc827df18cd4f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Loader/YamlFileLoaderTest.php
@@ -801,12 +801,14 @@ public function testBindings()
             '$foo' => [null],
             '$quz' => 'quz',
             '$factory' => 'factory',
+            'iterable $baz' => new TaggedIteratorArgument('bar'),
         ], array_map(function (BoundArgument $v) { return $v->getValues()[0]; }, $definition->getBindings()));
         $this->assertEquals([
             'quz',
             null,
             new Reference(Bar::class),
             [null],
+            new TaggedIteratorArgument('bar'),
         ], $definition->getArguments());
 
         $definition = $container->getDefinition(Bar::class);