diff --git a/Event/SitemapPopulateEvent.php b/Event/SitemapPopulateEvent.php
index 10021a7e..5f5192e7 100644
--- a/Event/SitemapPopulateEvent.php
+++ b/Event/SitemapPopulateEvent.php
@@ -12,68 +12,135 @@
 namespace Presta\SitemapBundle\Event;
 
 use Presta\SitemapBundle\Service\UrlContainerInterface;
-use Symfony\Component\EventDispatcher\Event;
+use Symfony\Component\EventDispatcher\Event as BaseEvent;
+use Symfony\Contracts\EventDispatcher\Event as ContractsBaseEvent;
 
-/**
- * Manage populate event
- *
- * @author depely
- */
-class SitemapPopulateEvent extends Event
-{
+if (is_subclass_of('Symfony\Component\EventDispatcher\EventDispatcher', 'Symfony\Contracts\EventDispatcher\EventDispatcherInterface')) {
     /**
-     * @Event("Presta\SitemapBundle\Event\SitemapPopulateEvent")
+     * Manage populate event
+     *
+     * @author depely
      */
-    const ON_SITEMAP_POPULATE = 'presta_sitemap.populate';
+    class SitemapPopulateEvent extends ContractsBaseEvent
+    {
+        /**
+         * @Event("Presta\SitemapBundle\Event\SitemapPopulateEvent")
+         */
+        const ON_SITEMAP_POPULATE = 'presta_sitemap.populate';
 
-    /**
-     * @var UrlContainerInterface
-     */
-    protected $urlContainer;
+        /**
+         * @var UrlContainerInterface
+         */
+        protected $urlContainer;
 
-    /**
-     * Allows creating EventListeners for particular sitemap sections, used when dumping
-     * @var string
-     */
-    protected $section;
+        /**
+         * Allows creating EventListeners for particular sitemap sections, used when dumping
+         * @var string
+         */
+        protected $section;
 
-    /**
-     * @param UrlContainerInterface $urlContainer
-     * @param string|null           $section
-     */
-    public function __construct(UrlContainerInterface $urlContainer, $section = null)
-    {
-        $this->urlContainer = $urlContainer;
-        $this->section = $section;
-    }
+        /**
+         * @param UrlContainerInterface $urlContainer
+         * @param string|null           $section
+         */
+        public function __construct(UrlContainerInterface $urlContainer, $section = null)
+        {
+            $this->urlContainer = $urlContainer;
+            $this->section = $section;
+        }
 
-    /**
-     * @deprecated in favor of `Presta\SitemapBundle\Event\SitemapPopulateEvent::getUrlContainer()`
-     *
-     * @return UrlContainerInterface
-     */
-    public function getGenerator()
-    {
-        @trigger_error('getGenerator is deprecated since 1.5. Use getUrlContainer instead', E_USER_DEPRECATED);
+        /**
+         * @deprecated in favor of `Presta\SitemapBundle\Event\SitemapPopulateEvent::getUrlContainer()`
+         *
+         * @return UrlContainerInterface
+         */
+        public function getGenerator()
+        {
+            @trigger_error('getGenerator is deprecated since 1.5. Use getUrlContainer instead', E_USER_DEPRECATED);
 
-        return $this->urlContainer;
-    }
+            return $this->urlContainer;
+        }
 
-    /**
-     * @return UrlContainerInterface
-     */
-    public function getUrlContainer()
-    {
-        return $this->urlContainer;
-    }
+        /**
+         * @return UrlContainerInterface
+         */
+        public function getUrlContainer()
+        {
+            return $this->urlContainer;
+        }
 
+        /**
+         * Section to be processed, null means any
+         *
+         * @return null|string
+         */
+        public function getSection()
+        {
+            return $this->section;
+        }
+    }
+} else {
     /**
-     * Section to be processed, null means any
+     * Manage populate event
      *
-     * @return null|string
+     * @author depely
      */
-    public function getSection()
+    class SitemapPopulateEvent extends BaseEvent
     {
-        return $this->section;
+        /**
+         * @Event("Presta\SitemapBundle\Event\SitemapPopulateEvent")
+         */
+        const ON_SITEMAP_POPULATE = 'presta_sitemap.populate';
+
+        /**
+         * @var UrlContainerInterface
+         */
+        protected $urlContainer;
+
+        /**
+         * Allows creating EventListeners for particular sitemap sections, used when dumping
+         * @var string
+         */
+        protected $section;
+
+        /**
+         * @param UrlContainerInterface $urlContainer
+         * @param string|null           $section
+         */
+        public function __construct(UrlContainerInterface $urlContainer, $section = null)
+        {
+            $this->urlContainer = $urlContainer;
+            $this->section = $section;
+        }
+
+        /**
+         * @deprecated in favor of `Presta\SitemapBundle\Event\SitemapPopulateEvent::getUrlContainer()`
+         *
+         * @return UrlContainerInterface
+         */
+        public function getGenerator()
+        {
+            @trigger_error('getGenerator is deprecated since 1.5. Use getUrlContainer instead', E_USER_DEPRECATED);
+
+            return $this->urlContainer;
+        }
+
+        /**
+         * @return UrlContainerInterface
+         */
+        public function getUrlContainer()
+        {
+            return $this->urlContainer;
+        }
+
+        /**
+         * Section to be processed, null means any
+         *
+         * @return null|string
+         */
+        public function getSection()
+        {
+            return $this->section;
+        }
     }
 }
diff --git a/Service/AbstractGenerator.php b/Service/AbstractGenerator.php
index a27e29ac..e620c15c 100644
--- a/Service/AbstractGenerator.php
+++ b/Service/AbstractGenerator.php
@@ -17,6 +17,7 @@
 use Presta\SitemapBundle\Sitemap\Url\UrlConcrete;
 use Presta\SitemapBundle\Sitemap\Urlset;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
 
 /**
  * Abstract sitemap generator class
@@ -144,7 +145,12 @@ abstract protected function newUrlset($name, \DateTime $lastmod = null);
     protected function populate($section = null)
     {
         $event = new SitemapPopulateEvent($this, $section);
-        $this->dispatcher->dispatch(SitemapPopulateEvent::ON_SITEMAP_POPULATE, $event);
+
+        if ($this->dispatcher instanceof ContractsEventDispatcherInterface) {
+            $this->dispatcher->dispatch($event, SitemapPopulateEvent::ON_SITEMAP_POPULATE);
+        } else {
+            $this->dispatcher->dispatch(SitemapPopulateEvent::ON_SITEMAP_POPULATE, $event);
+        }
     }
 
     /**