diff --git a/DependencyInjection/BeSimpleSoapExtension.php b/DependencyInjection/BeSimpleSoapExtension.php
index 4e2b47a..2821e1a 100644
--- a/DependencyInjection/BeSimpleSoapExtension.php
+++ b/DependencyInjection/BeSimpleSoapExtension.php
@@ -115,6 +115,13 @@ private function registerClientConfiguration(array $config, ContainerBuilder $co
                 ));
             }
 
+            $digest = $options['digest'];
+            if (false !== $digest['certificate']) {
+                $definition->addMethodCall('withDigestAuthentication', array(
+                    $digest['certificate'], $digest['passphrase']
+                ));
+            }
+
             if (isset($defOptions['cache_type'])) {
                 $defOptions['cache_type'] = $this->getCacheType($defOptions['cache_type']);
             }
diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 9374bff..b7abe7c 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -113,6 +113,14 @@ private function addClientSection(ArrayNodeDefinition $rootNode)
                                         ->end()
                                     ->end()
                                 ->end()
+                                ->arrayNode('digest')
+                                    ->info('digest authentication configuration')
+                                    ->addDefaultsIfNotSet()
+                                    ->children()
+                                        ->scalarNode('certificate')->defaultFalse()->end()
+                                        ->scalarNode('passphrase')->defaultNull()->end()
+                                    ->end()
+                                ->end()
                             ->end()
                         ->end()
                     ->end()
diff --git a/Resources/doc/soapclient/configuration.rst b/Resources/doc/soapclient/configuration.rst
index 59088cc..678644e 100644
--- a/Resources/doc/soapclient/configuration.rst
+++ b/Resources/doc/soapclient/configuration.rst
@@ -27,6 +27,11 @@ Configure your first client in your config file:
                     password: ~
                     auth:     ~ # can be 'basic' or 'ntlm'
 
+                # digest (optional)
+                digest:
+                    certificate: path to certificate
+                    passphrase: (optional)
+
 Using client
 ------------