diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b4eba82..323fde0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 **Merged pull requests:**
 
 - Release v2.1.5-2023.09 🎉
+- Added support 7z archives [\#282](https://github.com/torrentpier/torrentpier-lts/pull/282) ([belomaxorka](https://github.com/belomaxorka))
 - Added support bmp images in BBCode [\#279](https://github.com/torrentpier/torrentpier-lts/pull/279) ([belomaxorka](https://github.com/belomaxorka))
 - Added support webp images in BBCode [\#278](https://github.com/torrentpier/torrentpier-lts/pull/278) ([belomaxorka](https://github.com/belomaxorka))
 - Enhancements for text editor [\#277](https://github.com/torrentpier/torrentpier-lts/pull/277) ([belomaxorka](https://github.com/belomaxorka))
diff --git a/install/sql/mysql.sql b/install/sql/mysql.sql
index 3e8cb96b..780eb40f 100644
--- a/install/sql/mysql.sql
+++ b/install/sql/mysql.sql
@@ -628,6 +628,7 @@ INSERT INTO `bb_extensions` VALUES ('', '2', 'tar', '');
 INSERT INTO `bb_extensions` VALUES ('', '2', 'zip', '');
 INSERT INTO `bb_extensions` VALUES ('', '2', 'rar', '');
 INSERT INTO `bb_extensions` VALUES ('', '2', 'ace', '');
+INSERT INTO `bb_extensions` VALUES ('', '2', '7z', '');
 INSERT INTO `bb_extensions` VALUES ('', '3', 'txt', '');
 INSERT INTO `bb_extensions` VALUES ('', '3', 'c', '');
 INSERT INTO `bb_extensions` VALUES ('', '3', 'h', '');
diff --git a/install/upgrade/changes.txt b/install/upgrade/changes.txt
index 35c5442a..94ed2ea1 100644
--- a/install/upgrade/changes.txt
+++ b/install/upgrade/changes.txt
@@ -96,6 +96,9 @@ INSERT INTO `bb_cron` VALUES ('999', '1', 'PM cleanup', 'clean_pm.php', 'daily',
 
 // 2.1.5 (LTS 2023.07)
 DELETE FROM `bb_smilies` WHERE `code` = ':ad:';
-INSERT INTO `bb_smilies` (`code`, `smile_url`, `emoticon`) VALUES (':cd:', 'cd.gif', 'cd');
+INSERT INTO `bb_smilies` VALUES (':cd:', 'cd.gif', 'cd');
 ALTER TABLE `bb_posts_text` CHANGE `post_text` `post_text` MEDIUMTEXT NOT NULL;
 ALTER TABLE `bb_privmsgs_text` CHANGE `privmsgs_text` `privmsgs_text` MEDIUMTEXT NOT NULL;
+
+// 2.1.5 (LTS 2023.09)
+INSERT INTO `bb_extensions` VALUES ('', '2', '7z', '');