diff --git a/include/inc.ilias_version.php b/include/inc.ilias_version.php
index 206452c31892..d7dfef4f7801 100644
--- a/include/inc.ilias_version.php
+++ b/include/inc.ilias_version.php
@@ -9,5 +9,5 @@
 *
 * @package ilias-core
 */
-define("ILIAS_VERSION", "7.22 2023-05-31");
-define("ILIAS_VERSION_NUMERIC", "7.22");			// since version ILIAS 6 this must be always x.y: x and y are numbers
+define("ILIAS_VERSION", "7.23 2023-06-21");
+define("ILIAS_VERSION_NUMERIC", "7.23");			// since version ILIAS 6 this must be always x.y: x and y are numbers
diff --git a/setup/sql/ilDBTemplate.php b/setup/sql/ilDBTemplate.php
index 1718686925ab..31efd979bf07 100644
--- a/setup/sql/ilDBTemplate.php
+++ b/setup/sql/ilDBTemplate.php
@@ -47349,7 +47349,7 @@ function setupILIASDatabase()
 'module' => array('text', 'common'), 'keyword' => array('text', 'db_hotfixes_5_3'), 'value' => array('clob', '18')));
 
 $ilDB->insert("settings", array(
-'module' => array('text', 'common'), 'keyword' => array('text', 'db_hotfixes_7'), 'value' => array('clob', '102')));
+'module' => array('text', 'common'), 'keyword' => array('text', 'db_hotfixes_7'), 'value' => array('clob', '103')));
 
 $ilDB->insert("settings", array(
 'module' => array('text', 'common'), 'keyword' => array('text', 'db_update_running'), 'value' => array('clob', '0')));
@@ -53591,9 +53591,6 @@ function setupILIASDatabase()
 $pk_fields = array("child");
 $ilDB->addPrimaryKey("tree", $pk_fields);
 
-$in_fields = array("child");
-$ilDB->addIndex("tree", $in_fields, "i1", false);
-
 $in_fields = array("parent");
 $ilDB->addIndex("tree", $in_fields, "i2", false);
 
diff --git a/setup/sql/ilias3.sql b/setup/sql/ilias3.sql
index ecd401fe9252..4e41d9441108 100644
--- a/setup/sql/ilias3.sql
+++ b/setup/sql/ilias3.sql
@@ -19938,7 +19938,7 @@ INSERT INTO `settings` VALUES ('common','dbupwarn_tos_migr_54x','1');
 INSERT INTO `settings` VALUES ('common','dbupwarn_tstfixqstseq','1');
 INSERT INTO `settings` VALUES ('common','dbup_tst_skl_thres_mig_done','1');
 INSERT INTO `settings` VALUES ('common','db_hotfixes_5_3','18');
-INSERT INTO `settings` VALUES ('common','db_hotfixes_7','102');
+INSERT INTO `settings` VALUES ('common','db_hotfixes_7','103');
 INSERT INTO `settings` VALUES ('common','db_update_running','0');
 INSERT INTO `settings` VALUES ('common','db_version','5751');
 INSERT INTO `settings` VALUES ('common','default_repository_view','flat');
@@ -22675,7 +22675,6 @@ CREATE TABLE `tree` (
   `depth` smallint(6) NOT NULL DEFAULT 0,
   `path` varchar(4000) DEFAULT NULL,
   PRIMARY KEY (`child`),
-  KEY `i1_idx` (`child`),
   KEY `i2_idx` (`parent`),
   KEY `i3_idx` (`tree`),
   KEY `i4_idx` (`path`(255))
@@ -25033,4 +25032,4 @@ CREATE TABLE `xmlvalue_seq` (
 
 
 
--- Dump completed on 2023-05-31 17:15:51
+-- Dump completed on 2023-06-21 13:36:05