diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 7e78dd8f75208..f7fe9d3464ac1 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -19,6 +19,7 @@
         <env name="LDAP_PORT" value="3389" />
         <env name="REDIS_HOST" value="localhost" />
         <env name="MEMCACHED_HOST" value="localhost" />
+        <env name="MONGODB_HOST" value="localhost" />
         <env name="ZOOKEEPER_HOST" value="localhost" />
     </php>
 
diff --git a/src/Symfony/Component/Lock/composer.json b/src/Symfony/Component/Lock/composer.json
index 7c5fa0acd599d..3e8e77e5a3819 100644
--- a/src/Symfony/Component/Lock/composer.json
+++ b/src/Symfony/Component/Lock/composer.json
@@ -20,8 +20,9 @@
         "psr/log": "~1.0"
     },
     "require-dev": {
-        "predis/predis": "~1.0",
-        "doctrine/dbal": "~2.4"
+        "doctrine/dbal": "~2.4",
+        "mongodb/mongodb": "~1.1",
+        "predis/predis": "~1.0"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Lock\\": "" },
diff --git a/src/Symfony/Component/Lock/phpunit.xml.dist b/src/Symfony/Component/Lock/phpunit.xml.dist
index 4a066573f7d08..96c3ea1903abe 100644
--- a/src/Symfony/Component/Lock/phpunit.xml.dist
+++ b/src/Symfony/Component/Lock/phpunit.xml.dist
@@ -12,6 +12,7 @@
         <ini name="error_reporting" value="-1" />
         <env name="REDIS_HOST" value="localhost" />
         <env name="MEMCACHED_HOST" value="localhost" />
+        <env name="MONGODB_HOST" value="localhost" />
         <env name="ZOOKEEPER_HOST" value="localhost" />
     </php>