diff --git a/api/setup/setup.inc.php b/api/setup/setup.inc.php
index 79d269ae6a..0758b549b4 100644
--- a/api/setup/setup.inc.php
+++ b/api/setup/setup.inc.php
@@ -11,7 +11,7 @@
 /* Basic information about this app */
 $setup_info['api']['name']      = 'api';
 $setup_info['api']['title']     = 'EGroupware API';
-$setup_info['api']['version']   = '20.1';
+$setup_info['api']['version']   = '20.1.001';
 $setup_info['api']['versions']['current_header'] = '1.29';
 // maintenance release in sync with changelog in doc/rpm-build/debian.changes
 $setup_info['api']['versions']['maintenance_release'] = '20.1.20201005';
@@ -52,6 +52,7 @@ $setup_info['api']['tables'][]  = 'egw_ea_credentials';
 $setup_info['api']['tables'][]  = 'egw_ea_identities';
 $setup_info['api']['tables'][]  = 'egw_ea_valid';
 $setup_info['api']['tables'][]  = 'egw_ea_notifications';
+$setup_info['api']['tables'][]  = 'egw_addressbook_shared';
 
 // hooks used by vfs_home_hooks to manage user- and group-directories for the new stream based VFS
 $setup_info['api']['hooks']['addaccount'] = array('EGroupware\\Api\\Vfs\\Hooks::addAccount', 'EGroupware\\Api\\Mail\\Hooks::addaccount');
@@ -139,3 +140,4 @@ $setup_info['groupdav']['author'] = $setup_info['groupdav']['maintainer'] = arra
 $setup_info['groupdav']['license'] = 'GPL';
 $setup_info['groupdav']['hooks']['preferences']	= 'EGroupware\\Api\\CalDAV\\Hooks::menus';
 $setup_info['groupdav']['hooks']['settings']	= 'EGroupware\\Api\\CalDAV\\Hooks::settings';
+
diff --git a/api/setup/tables_current.inc.php b/api/setup/tables_current.inc.php
index a5486597bd..9c5f443216 100644
--- a/api/setup/tables_current.inc.php
+++ b/api/setup/tables_current.inc.php
@@ -510,5 +510,19 @@ $phpgw_baseline = array(
 		'fk' => array(),
 		'ix' => array(array('account_id','acc_id')),
 		'uc' => array()
+	),
+	'egw_addressbook_shared' => array(
+		'fd' => array(
+			'shared_id' => array('type' => 'auto','nullable' => False),
+			'contact_id' => array('type' => 'int','precision' => '4','nullable' => False),
+			'shared_with' => array('type' => 'int','meta' => 'account','precision' => '4','nullable' => False),
+			'shared_by' => array('type' => 'int','meta' => 'user','precision' => '4','nullable' => False),
+			'shared_at' => array('type' => 'timestamp','nullable' => False,'default' => 'current_timestamp'),
+			'shared_writable' => array('type' => 'bool','nullable' => False,'default' => '0')
+		),
+		'pk' => array('shared_id'),
+		'fk' => array(),
+		'ix' => array('contact_id','shared_with'),
+		'uc' => array()
 	)
 );
diff --git a/api/setup/tables_update.inc.php b/api/setup/tables_update.inc.php
index 3f996418a6..65867c8174 100644
--- a/api/setup/tables_update.inc.php
+++ b/api/setup/tables_update.inc.php
@@ -728,3 +728,28 @@ function api_upgrade19_1_004()
 {
 	return $GLOBALS['setup_info']['api']['currentver'] = '20.1';
 }
+
+/**
+ * Table for per-contact sharing
+ *
+ * @return string
+ */
+function api_upgrade20_1()
+{
+	$GLOBALS['egw_setup']->oProc->CreateTable('egw_addressbook_shared',array(
+		'fd' => array(
+			'shared_id' => array('type' => 'auto','nullable' => False),
+			'contact_id' => array('type' => 'int','precision' => '4','nullable' => False),
+			'shared_with' => array('type' => 'int','meta' => 'account','precision' => '4','nullable' => False),
+			'shared_by' => array('type' => 'int','meta' => 'user','precision' => '4','nullable' => False),
+			'shared_at' => array('type' => 'timestamp','nullable' => False,'default' => 'current_timestamp'),
+			'shared_writable' => array('type' => 'bool','nullable' => False,'default' => '0')
+		),
+		'pk' => array('shared_id'),
+		'fk' => array(),
+		'ix' => array('contact_id','shared_with'),
+		'uc' => array()
+	));
+
+	return $GLOBALS['setup_info']['api']['currentver'] = '20.1.001';
+}