diff --git a/README.md b/README.md
index c31bc29..475de02 100644
--- a/README.md
+++ b/README.md
@@ -680,6 +680,14 @@ class Client extends BaseClient
 }
 ```
 
+### Clients as Tagged Services
+
+Clients will be tagged as `fos_elastica.client`, which makes it possible to
+retrieve all clients from the service container and interact with them via a
+compiler pass. See
+[Working with Tagged Services](http://symfony.com/doc/current/components/dependency_injection/tags.html)
+for more information.
+
 ### Example of Advanced Query
 
 If you would like to perform more advanced queries, here is one example using
diff --git a/Resources/config/config.xml b/Resources/config/config.xml
index cd91961..4097289 100644
--- a/Resources/config/config.xml
+++ b/Resources/config/config.xml
@@ -33,6 +33,7 @@
             <call method="setLogger">
                 <argument type="service" id="fos_elastica.logger" />
             </call>
+            <tag name="fos_elastica.client" />
         </service>
 
         <service id="fos_elastica.index_manager" class="FOS\ElasticaBundle\IndexManager">