diff --git a/app/config/core.php b/app/config/core.php
index ea7cd12e..7346705c 100644
--- a/app/config/core.php
+++ b/app/config/core.php
@@ -347,7 +347,7 @@
   $CWL['applicationID'] = '';
   $CWL['applicationPassword'] = '';
 
-  define('IPEER_VERSION', '3.4.6');
+  define('IPEER_VERSION', '3.4.7');
 
 
 /**
diff --git a/app/libs/upgrade_scripts/upgrade_347.php b/app/libs/upgrade_scripts/upgrade_347.php
new file mode 100644
index 00000000..65840ffe
--- /dev/null
+++ b/app/libs/upgrade_scripts/upgrade_347.php
@@ -0,0 +1,48 @@
+<?php
+require_once('upgrade_base.php');
+/**
+ * Upgrade347
+ *
+ * @uses UpgradeBase
+ * @package   CTLT.iPeer
+ * @author    Pan Luo
+ * @copyright 2021 All rights reserved.
+ * @license   PHP Version 3.0 {@link http://www.php.net/license/3_0.txt}
+ * @version   Release: 3.4.7
+ */
+ class Upgrade347 extends UpgradeBase
+{
+    /**
+     * __construct
+     *
+     * @access public
+     * @return void
+     */
+    public function __construct()
+    {
+        $this->fromVersions = array(null, '3.4.6');
+        $this->toVersion = '3.4.7';
+        $this->dbVersion = 17;
+    }
+
+    /**
+     *
+     * @access public
+     * @return bool
+     */
+    public function isUpgradable()
+    {
+        return parent::isUpgradable();
+    }
+
+    /**
+     * up
+     *
+     * @access public
+     * @return boolean
+     */
+    public function up()
+    {
+        return true;
+    }
+}
diff --git a/readme.md b/readme.md
index ad4a30d9..fcc6ae7c 100644
--- a/readme.md
+++ b/readme.md
@@ -201,6 +201,11 @@ You may optionally override the user default IRI (from `$base_url/users/view/$us
 
 `CALIPER_ACTOR_UNIQUE_IDENTIFIER_PARAM`: Optionally set the actor's unique identifier using any column from the `user` table (ex: `username`, `id`, `email`). Will be inserted into the `CALIPER_ACTOR_BASE_URL` string.
 
+iPeer 3.4.7
+-----------
+* Increase PHP memory limit for docker container
+* Fix logging issue for docker container
+
 iPeer 3.4.6
 -----------
 * FIX mixeval edit (#660)
diff --git a/version.txt b/version.txt
index 1cf82530..2aa51319 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-3.4.6
+3.4.7