diff --git a/phpgwapi/setup/setup.inc.php b/phpgwapi/setup/setup.inc.php
index 11ce49453d..f6b266b935 100755
--- a/phpgwapi/setup/setup.inc.php
+++ b/phpgwapi/setup/setup.inc.php
@@ -13,7 +13,7 @@
 
 	/* Basic information about this app */
 	$setup_info['phpgwapi']['name']      = 'phpgwapi';
-	$setup_info['phpgwapi']['version']   = '0.9.15.011';
+	$setup_info['phpgwapi']['version']   = '0.9.15.012';
 	$setup_info['phpgwapi']['versions']['current_header'] = '1.23';
 	$setup_info['phpgwapi']['enable']    = 3;
 	$setup_info['phpgwapi']['app_order'] = 1;
diff --git a/phpgwapi/setup/tables_current.inc.php b/phpgwapi/setup/tables_current.inc.php
index 766e9181df..70c10c7606 100644
--- a/phpgwapi/setup/tables_current.inc.php
+++ b/phpgwapi/setup/tables_current.inc.php
@@ -180,7 +180,8 @@
 				'cat_appname' => array('type' => 'varchar', 'precision' => 50, 'nullable' => false),
 				'cat_name' => array('type' => 'varchar', 'precision' => 150, 'nullable' => false),
 				'cat_description' => array('type' => 'varchar', 'precision' => 255, 'nullable' => false),
-				'cat_data' => array('type' => 'text')
+				'cat_data' => array('type' => 'text'),
+				'last_mod' => array('type' => 'int','precision' => '4','nullable' => False)
 			),
 			'pk' => array('cat_id'),
 			'fk' => array(),
@@ -240,7 +241,8 @@
 				'email' => array('type' => 'varchar', 'precision' => 64,'nullable' => True),
 				'email_type' => array('type' => 'varchar', 'precision' => 32,'nullable' => False,'default' => 'INTERNET'),
 				'email_home' => array('type' => 'varchar', 'precision' => 64,'nullable' => True),
-				'email_home_type' => array('type' => 'varchar', 'precision' => 32,'nullable' => False,'default' => 'INTERNET')
+				'email_home_type' => array('type' => 'varchar', 'precision' => 32,'nullable' => False,'default' => 'INTERNET'),
+				'last_mod' => array('type' => 'int','precision' => '4','nullable' => False)
 			),
 			'pk' => array('id'),
 			'fk' => array(),
diff --git a/phpgwapi/setup/tables_update.inc.php b/phpgwapi/setup/tables_update.inc.php
index a208db3d12..f1065265f8 100644
--- a/phpgwapi/setup/tables_update.inc.php
+++ b/phpgwapi/setup/tables_update.inc.php
@@ -123,6 +123,22 @@
 		return $GLOBALS['setup_info']['phpgwapi']['currentver'];
 	}
 
+	$test[] = '0.9.14.504';
+	function phpgwapi_upgrade0_9_14_504()
+	{
+		// 0.9.15.001-12 are already included in 0.9.14.504
+		$GLOBALS['setup_info']['phpgwapi']['currentver'] = '0.9.15.012';
+		return $GLOBALS['setup_info']['phpgwapi']['currentver'];
+	}
+
+	$test[] = '0.9.14.505';
+	function phpgwapi_upgrade0_9_14_505()
+	{
+		// 0.9.15.001-12 are already included in 0.9.14.505
+		$GLOBALS['setup_info']['phpgwapi']['currentver'] = '0.9.15.012';
+		return $GLOBALS['setup_info']['phpgwapi']['currentver'];
+	}
+
 	$test[] = '0.9.15.001';
 	function phpgwapi_upgrade0_9_15_001()
 	{
@@ -348,4 +364,22 @@
 		return $GLOBALS['setup_info']['phpgwapi']['currentver'];
 	}
 
+	$test[] = '0.9.15.011';
+	function phpgwapi_upgrade0_9_15_011()
+	{
+		$GLOBALS['phpgw_setup']->oProc->AddColumn('phpgw_addressbook','last_mod',array(
+				'type' => 'int',
+				'precision' => '4',
+				'nullable' => False
+			));
+
+		$GLOBALS['phpgw_setup']->oProc->AddColumn('phpgw_categories','last_mod',array(
+				'type' => 'int',
+				'precision' => '4',
+				'nullable' => False
+			));
+
+		$GLOBALS['setup_info']['phpgwapi']['currentver'] = '0.9.15.012';
+		return $GLOBALS['setup_info']['phpgwapi']['currentver'];
+	}
 ?>