diff --git a/framework/yii/web/Session.php b/framework/yii/web/Session.php
index fc715dbf4b9..c5518835337 100644
--- a/framework/yii/web/Session.php
+++ b/framework/yii/web/Session.php
@@ -209,7 +209,9 @@ public function setId($value)
 	 */
 	public function regenerateID($deleteOldSession = false)
 	{
+		session_write_close();
 		session_regenerate_id($deleteOldSession);
+		session_start();
 	}
 
 	/**