diff --git a/composer.json b/composer.json
index 81bd469..13f7baa 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "psr/log": "~1.0",
         "psr/simple-cache": "^1.0",
         "jmikola/geojson": "~1.0",
-        "symfony/event-dispatcher": ">=2.0 <5.0",
+        "symfony/event-dispatcher": ">=2.0 <6.0",
         "symfony/polyfill-php55": "~1.0"
     },
     "require-dev": {
diff --git a/src/Document.php b/src/Document.php
index 7d2793d..3acc85e 100644
--- a/src/Document.php
+++ b/src/Document.php
@@ -20,6 +20,18 @@
 use Sokil\Mongo\Exception\WriteException;
 use Symfony\Component\EventDispatcher\EventDispatcher;
 use GeoJson\Geometry\Geometry;
+use Sokil\Mongo\Event\ValidateErrorEvent;
+use Sokil\Mongo\Event\DeleteAfterEvent;
+use Sokil\Mongo\Event\DeleteBeforeEvent;
+use Sokil\Mongo\Event\ValidateAfterEvent;
+use Sokil\Mongo\Event\ValidateBeforeEvent;
+use Sokil\Mongo\Event\SaveAfterEvent;
+use Sokil\Mongo\Event\SaveBeforeEvent;
+use Sokil\Mongo\Event\UpdateBeforeEvent;
+use Sokil\Mongo\Event\UpdateAfterEvent;
+use Sokil\Mongo\Event\InsertAfterEvent;
+use Sokil\Mongo\Event\InsertBeforeEvent;
+use Sokil\Mongo\Event\ConstructAfterEvent;
 
 /**
  * Instance of this class is a representation of one document from collection.
@@ -136,7 +148,7 @@ public function __construct(
         }
 
         // execute after construct event handlers
-        $this->triggerEvent('afterConstruct');
+        $this->triggerEvent('afterConstruct', new ConstructAfterEvent());
     }
 
     public function getOptions()
@@ -211,7 +223,7 @@ private function initDelegates()
     {
         // start event dispatching
         $this->eventDispatcher = new EventDispatcher;
-        
+
         // create operator
         $this->operator = $this->getCollection()->operator();
 
@@ -256,7 +268,7 @@ public function __call($name, $arguments)
                 array($this->eventDispatcher, 'addListener'),
                 $addListenerArguments
             );
-            
+
             return $this;
         }
 
@@ -549,6 +561,10 @@ public function triggerEvent($eventName, Event $event = null)
 
         $event->setTarget($this);
 
+        if (interface_exists('Psr\EventDispatcher\EventDispatcherInterface')) {
+            return $this->eventDispatcher->dispatch($event);
+        }
+
         return $this->eventDispatcher->dispatch($eventName, $event);
     }
 
@@ -646,7 +662,7 @@ public function isStored()
      */
     public function validate()
     {
-        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_VALIDATE)->isCancelled()) {
+        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_VALIDATE, new ValidateBeforeEvent())->isCancelled()) {
             return $this;
         }
 
@@ -654,12 +670,12 @@ public function validate()
             $exception = new InvalidDocumentException('Document not valid');
             $exception->setDocument($this);
 
-            $this->triggerEvent(self::EVENT_NAME_VALIDATE_ERROR);
+            $this->triggerEvent(self::EVENT_NAME_VALIDATE_ERROR, new ValidateErrorEvent());
 
             throw $exception;
         }
 
-        $this->triggerEvent(self::EVENT_NAME_AFTER_VALIDATE);
+        $this->triggerEvent(self::EVENT_NAME_AFTER_VALIDATE, new ValidateAfterEvent());
 
         return $this;
     }
@@ -1158,7 +1174,7 @@ public function bitwiceXor($field, $value)
      */
     private function internalInsert()
     {
-        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_INSERT)->isCancelled()) {
+        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_INSERT, new InsertBeforeEvent())->isCancelled()) {
             return;
         }
 
@@ -1182,7 +1198,7 @@ private function internalInsert()
         $this->defineId($document['_id']);
 
         // after insert event
-        $this->triggerEvent(self::EVENT_NAME_AFTER_INSERT);
+        $this->triggerEvent(self::EVENT_NAME_AFTER_INSERT, new InsertAfterEvent());
     }
 
     /**
@@ -1193,7 +1209,7 @@ private function internalInsert()
      */
     private function internalUpdate()
     {
-        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_UPDATE)->isCancelled()) {
+        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_UPDATE, new UpdateBeforeEvent())->isCancelled()) {
             return;
         }
 
@@ -1245,7 +1261,7 @@ private function internalUpdate()
             $this->getOperator()->reset();
         }
 
-        $this->triggerEvent(self::EVENT_NAME_AFTER_UPDATE);
+        $this->triggerEvent(self::EVENT_NAME_AFTER_UPDATE, new UpdateAfterEvent());
     }
 
     /**
@@ -1270,7 +1286,7 @@ public function save($validate = true)
         }
 
         // handle beforeSave event
-        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_SAVE)->isCancelled()) {
+        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_SAVE, new SaveBeforeEvent())->isCancelled()) {
             return $this;
         }
 
@@ -1282,11 +1298,11 @@ public function save($validate = true)
         }
 
         // handle afterSave event
-        $this->triggerEvent(self::EVENT_NAME_AFTER_SAVE);
+        $this->triggerEvent(self::EVENT_NAME_AFTER_SAVE, new SaveAfterEvent());
 
         // set document unmodified
         $this->apply();
-        
+
         return $this;
     }
 
@@ -1309,7 +1325,7 @@ public function isSaveRequired()
      */
     public function delete()
     {
-        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_DELETE)->isCancelled()) {
+        if ($this->triggerEvent(self::EVENT_NAME_BEFORE_DELETE, new DeleteBeforeEvent())->isCancelled()) {
             return $this;
         }
 
@@ -1321,7 +1337,7 @@ public function delete()
             throw new Exception(sprintf('Delete document error: %s', $status['err']));
         }
 
-        $this->triggerEvent(self::EVENT_NAME_AFTER_DELETE);
+        $this->triggerEvent(self::EVENT_NAME_AFTER_DELETE, new DeleteAfterEvent());
 
         // drop from document's pool
         $this->getCollection()->removeDocumentFromDocumentPool($this);
diff --git a/src/Event.php b/src/Event.php
index 1697f82..b566a08 100644
--- a/src/Event.php
+++ b/src/Event.php
@@ -11,54 +11,110 @@
 
 namespace Sokil\Mongo;
 
-class Event extends \Symfony\Component\EventDispatcher\Event
+if (class_exists('Symfony\Contracts\EventDispatcher\Event'))
 {
-    /**
-     * @var mixed $target target object, on which event is fired
-     */
-    private $target;
-    
-    private $cancelled = false;
-
-    /**
-     * Set target object, on which event is fired
-     * @param mixed $target
-     * @return \Sokil\Mongo\Event
-     */
-    public function setTarget($target)
+    class Event extends \Symfony\Contracts\EventDispatcher\Event
     {
-        $this->target = $target;
-        return $this;
-    }
+        /**
+         * @var mixed $target target object, on which event is fired
+         */
+        private $target;
 
-    /**
-     * Get target object, on which event is fired
-     * @return mixed
-     */
-    public function getTarget()
-    {
-        return $this->target;
-    }
-    
-    /**
-     * Check if operation execution cancelled
-     */
-    public function isCancelled()
-    {
-        return $this->cancelled;
+        private $cancelled = false;
+
+        /**
+         * Set target object, on which event is fired
+         * @param mixed $target
+         * @return \Sokil\Mongo\Event
+         */
+        public function setTarget($target)
+        {
+            $this->target = $target;
+            return $this;
+        }
+
+        /**
+         * Get target object, on which event is fired
+         * @return mixed
+         */
+        public function getTarget()
+        {
+            return $this->target;
+        }
+
+        /**
+         * Check if operation execution cancelled
+         */
+        public function isCancelled()
+        {
+            return $this->cancelled;
+        }
+
+        /**
+         * Cancel related operation execution. If called as beforeInsert
+         * handler, than insert will be cancelled.
+         */
+        public function cancel()
+        {
+            $this->cancelled = true;
+
+            // propagation also not need
+            $this->stopPropagation();
+
+            return $this;
+        }
     }
-    
-    /**
-     * Cancel related operation execution. If called as beforeInsert
-     * handler, than insert will be cancelled.
-     */
-    public function cancel()
+}
+else {
+    class Event extends \Symfony\Component\EventDispatcher\Event
     {
-        $this->cancelled = true;
-        
-        // propagation also not need
-        $this->stopPropagation();
-        
-        return $this;
+        /**
+         * @var mixed $target target object, on which event is fired
+         */
+        private $target;
+
+        private $cancelled = false;
+
+        /**
+         * Set target object, on which event is fired
+         * @param mixed $target
+         * @return \Sokil\Mongo\Event
+         */
+        public function setTarget($target)
+        {
+            $this->target = $target;
+            return $this;
+        }
+
+        /**
+         * Get target object, on which event is fired
+         * @return mixed
+         */
+        public function getTarget()
+        {
+            return $this->target;
+        }
+
+        /**
+         * Check if operation execution cancelled
+         */
+        public function isCancelled()
+        {
+            return $this->cancelled;
+        }
+
+        /**
+         * Cancel related operation execution. If called as beforeInsert
+         * handler, than insert will be cancelled.
+         */
+        public function cancel()
+        {
+            $this->cancelled = true;
+
+            // propagation also not need
+            $this->stopPropagation();
+
+            return $this;
+        }
     }
 }
diff --git a/src/Event/ConstructAfterEvent.php b/src/Event/ConstructAfterEvent.php
new file mode 100644
index 0000000..75e062a
--- /dev/null
+++ b/src/Event/ConstructAfterEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class ConstructAfterEvent extends Event
+{
+    const NAME = 'afterConstruct';
+}
diff --git a/src/Event/DeleteAfterEvent.php b/src/Event/DeleteAfterEvent.php
new file mode 100644
index 0000000..df7699e
--- /dev/null
+++ b/src/Event/DeleteAfterEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class DeleteAfterEvent extends Event
+{
+    const NAME = 'afterDelete';
+}
diff --git a/src/Event/DeleteBeforeEvent.php b/src/Event/DeleteBeforeEvent.php
new file mode 100644
index 0000000..2a3de1a
--- /dev/null
+++ b/src/Event/DeleteBeforeEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class DeleteBeforeEvent extends Event
+{
+    const NAME = 'beforeDelete';
+}
diff --git a/src/Event/InsertAfterEvent.php b/src/Event/InsertAfterEvent.php
new file mode 100644
index 0000000..d4ecd9a
--- /dev/null
+++ b/src/Event/InsertAfterEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class InsertAfterEvent extends Event
+{
+    const NAME = 'afterInsert';
+}
diff --git a/src/Event/InsertBeforeEvent.php b/src/Event/InsertBeforeEvent.php
new file mode 100644
index 0000000..a1d56f4
--- /dev/null
+++ b/src/Event/InsertBeforeEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class InsertBeforeEvent extends Event
+{
+    const NAME = 'beforeInsert';
+}
diff --git a/src/Event/SaveAfterEvent.php b/src/Event/SaveAfterEvent.php
new file mode 100644
index 0000000..9ab9cbe
--- /dev/null
+++ b/src/Event/SaveAfterEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class SaveAfterEvent extends Event
+{
+    const NAME = 'afterSave';
+}
diff --git a/src/Event/SaveBeforeEvent.php b/src/Event/SaveBeforeEvent.php
new file mode 100644
index 0000000..0817c8c
--- /dev/null
+++ b/src/Event/SaveBeforeEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class SaveBeforeEvent extends Event
+{
+    const NAME = 'beforeSave';
+}
diff --git a/src/Event/UpdateAfterEvent.php b/src/Event/UpdateAfterEvent.php
new file mode 100644
index 0000000..7c2ea56
--- /dev/null
+++ b/src/Event/UpdateAfterEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class UpdateAfterEvent extends Event
+{
+    const NAME = 'afterUpdate';
+}
diff --git a/src/Event/UpdateBeforeEvent.php b/src/Event/UpdateBeforeEvent.php
new file mode 100644
index 0000000..0fd8a54
--- /dev/null
+++ b/src/Event/UpdateBeforeEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class UpdateBeforeEvent extends Event
+{
+    const NAME = 'beforeUpdate';
+}
diff --git a/src/Event/ValidateAfterEvent.php b/src/Event/ValidateAfterEvent.php
new file mode 100644
index 0000000..320e796
--- /dev/null
+++ b/src/Event/ValidateAfterEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class ValidateAfterEvent extends Event
+{
+    const NAME = 'afterValidate';
+}
diff --git a/src/Event/ValidateBeforeEvent.php b/src/Event/ValidateBeforeEvent.php
new file mode 100644
index 0000000..eaccbe4
--- /dev/null
+++ b/src/Event/ValidateBeforeEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class ValidateBeforeEvent extends Event
+{
+    const NAME = 'beforeValidate';
+}
diff --git a/src/Event/ValidateErrorEvent.php b/src/Event/ValidateErrorEvent.php
new file mode 100644
index 0000000..5c95bac
--- /dev/null
+++ b/src/Event/ValidateErrorEvent.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Sokil\Mongo\Event;
+
+use Sokil\Mongo\Event;
+
+class ValidateErrorEvent extends Event
+{
+    const NAME = 'validateError';
+}