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 2f745c3326d49..208f5118ec7b3 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
@@ -265,6 +265,7 @@
       <xsd:enumeration value="expression" />
       <xsd:enumeration value="string" />
       <xsd:enumeration value="constant" />
+      <xsd:enumeration value="binary" />
       <xsd:enumeration value="iterator" />
       <xsd:enumeration value="service_locator" />
       <!-- "tagged" is an alias of "tagged_iterator", using "tagged_iterator" is preferred. -->