diff --git a/database.sql b/database.sql
index 4384d44f86..892de72f1b 100644
--- a/database.sql
+++ b/database.sql
@@ -843,11 +843,10 @@ CREATE TABLE IF NOT EXISTS `intro` (
 -- TABLE key-value
 --
 CREATE TABLE IF NOT EXISTS `key-value` (
-	`id` int unsigned NOT NULL auto_increment COMMENT '',
-	`k` varbinary(50) NOT NULL DEFAULT '' COMMENT '',
+	`k` varbinary(50) NOT NULL COMMENT '',
 	`v` mediumtext COMMENT '',
-	 PRIMARY KEY(`id`),
-	 UNIQUE INDEX `k` (`k`)
+	`updated_at` int unsigned NOT NULL COMMENT 'timestamp of the last update',
+	 PRIMARY KEY(`k`)
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='A key value storage';
 
 --
@@ -1843,6 +1842,21 @@ CREATE TABLE IF NOT EXISTS `worker-ipc` (
 	 PRIMARY KEY(`key`)
 ) ENGINE=MEMORY DEFAULT COLLATE utf8mb4_general_ci COMMENT='Inter process communication between the frontend and the worker';
 
+--
+-- TABLE advancedcontentfilter_rules
+--
+CREATE TABLE IF NOT EXISTS `advancedcontentfilter_rules` (
+	`id` int unsigned NOT NULL auto_increment COMMENT 'Auto incremented rule id',
+	`uid` int unsigned NOT NULL COMMENT 'Owner user id',
+	`name` varchar(255) NOT NULL COMMENT 'Rule name',
+	`expression` mediumtext NOT NULL COMMENT 'Expression text',
+	`serialized` mediumtext NOT NULL COMMENT 'Serialized parsed expression',
+	`active` boolean NOT NULL DEFAULT '1' COMMENT 'Whether the rule is active or not',
+	`created` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' COMMENT 'Creation date',
+	 PRIMARY KEY(`id`),
+	 INDEX `uid_active` (`uid`,`active`)
+) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Advancedcontentfilter addon rules';
+
 --
 -- VIEW application-view
 --
diff --git a/doc/database/db_key-value.md b/doc/database/db_key-value.md
index a346e6827e..514fdaa698 100644
--- a/doc/database/db_key-value.md
+++ b/doc/database/db_key-value.md
@@ -6,19 +6,18 @@ A key value storage
 Fields
 ------
 
-| Field | Description | Type          | Null | Key | Default | Extra          |
-| ----- | ----------- | ------------- | ---- | --- | ------- | -------------- |
-| id    |             | int unsigned  | NO   | PRI | NULL    | auto_increment |
-| k     |             | varbinary(50) | NO   |     |         |                |
-| v     |             | mediumtext    | YES  |     | NULL    |                |
+| Field      | Description                  | Type          | Null | Key | Default | Extra |
+| ---------- | ---------------------------- | ------------- | ---- | --- | ------- | ----- |
+| k          |                              | varbinary(50) | NO   | PRI | NULL    |       |
+| v          |                              | mediumtext    | YES  |     | NULL    |       |
+| updated_at | timestamp of the last update | int unsigned  | YES  |     | NULL    |       |
 
 Indexes
 ------------
 
-| Name    | Fields    |
-| ------- | --------- |
-| PRIMARY | id        |
-| k       | UNIQUE, k |
+| Name    | Fields |
+| ------- | ------ |
+| PRIMARY | k      |
 
 
 Return to [database documentation](help/database)
diff --git a/src/Core/KeyValueStorage/Type/DBKeyValueStorage.php b/src/Core/KeyValueStorage/Type/DBKeyValueStorage.php
index 60e6087e28..1c9e44ce8e 100644
--- a/src/Core/KeyValueStorage/Type/DBKeyValueStorage.php
+++ b/src/Core/KeyValueStorage/Type/DBKeyValueStorage.php
@@ -89,7 +89,10 @@ class DBKeyValueStorage extends AbstractKeyValueStorage
 
 			$dbValue = ValueConversion::toDbValue($value);
 
-			$return = $this->database->update(self::DB_KEY_VALUE_TABLE, ['v' => $dbValue], ['k' => $offset], true);
+			$return = $this->database->update(self::DB_KEY_VALUE_TABLE, [
+				'v' => $dbValue,
+				'updated_at' => time()
+			], ['k' => $offset], true);
 
 			if (!$return) {
 				throw new \Exception(sprintf('database update failed: %s', $this->database->errorMessage()));
diff --git a/static/dbstructure.config.php b/static/dbstructure.config.php
index 0128b0343e..3b3d6067c1 100644
--- a/static/dbstructure.config.php
+++ b/static/dbstructure.config.php
@@ -892,13 +892,12 @@ return [
 	"key-value" => [
 		"comment" => "A key value storage",
 		"fields" => [
-			"id" => ["type" => "int unsigned", "not null" => "1", "extra" => "auto_increment", "primary" => "1", "comment" => ""],
-			"k" => ["type" => "varbinary(50)", "not null" => "1", "default" => "", "comment" => ""],
+			"k" => ["type" => "varbinary(50)", "not null" => "1", "primary" => "1", "comment" => ""],
 			"v" => ["type" => "mediumtext", "comment" => ""],
+			"updated_at" => ["type" => "int unsigned", "not null" => "0", "comment" => "timestamp of the last update"],
 		],
 		"indexes" => [
-			"PRIMARY" => ["id"],
-			"k" => ["UNIQUE", "k"],
+			"PRIMARY" => ["k"],
 		],
 	],
 	"locks" => [
diff --git a/tests/src/Core/KeyValueStorage/DBKeyValueStorageTest.php b/tests/src/Core/KeyValueStorage/DBKeyValueStorageTest.php
index 16fa9ab7e7..967da78a46 100644
--- a/tests/src/Core/KeyValueStorage/DBKeyValueStorageTest.php
+++ b/tests/src/Core/KeyValueStorage/DBKeyValueStorageTest.php
@@ -24,6 +24,7 @@ namespace Friendica\Test\src\Core\KeyValueStorage;
 use Friendica\Core\Config\ValueObject\Cache;
 use Friendica\Core\KeyValueStorage\Capabilities\ICanManageKeyValuePairs;
 use Friendica\Core\KeyValueStorage\Type\DBKeyValueStorage;
+use Friendica\Database\Database;
 use Friendica\Database\Definition\DbaDefinition;
 use Friendica\Database\Definition\ViewDefinition;
 use Friendica\Test\DatabaseTestTrait;
@@ -35,6 +36,9 @@ class DBKeyValueStorageTest extends KeyValueStorageTest
 {
 	use DatabaseTestTrait;
 
+	/** @var Database */
+	protected $database;
+
 	protected function setUp(): void
 	{
 		parent::setUp();
@@ -56,9 +60,37 @@ class DBKeyValueStorageTest extends KeyValueStorageTest
 
 		$basePath = new BasePath(dirname(__FILE__, 5), $_SERVER);
 
-		$database = new StaticDatabase($cache, new Profiler($cache), (new DbaDefinition($basePath->getPath()))->load(), (new ViewDefinition($basePath->getPath()))->load());
-		$database->setTestmode(true);
+		$this->database = new StaticDatabase($cache, new Profiler($cache), (new DbaDefinition($basePath->getPath()))->load(), (new ViewDefinition($basePath->getPath()))->load());
+		$this->database->setTestmode(true);
 
-		return new DBKeyValueStorage($database);
+		return new DBKeyValueStorage($this->database);
+	}
+
+	/** @dataProvider dataTests */
+	public function testUpdatedAt($k, $v)
+	{
+		$instance = $this->getInstance();
+
+		$instance->set($k, $v);
+
+		self::assertEquals($v, $instance->get($k));
+		self::assertEquals($v, $instance[$k]);
+
+		$entry = $this->database->selectFirst(DBKeyValueStorage::DB_KEY_VALUE_TABLE, ['updated_at'], ['k' => $k]);
+		self::assertNotEmpty($entry);
+
+		$updateAt = $entry['updated_at'];
+
+		$instance->set($k, 'another_value');
+
+		self::assertEquals('another_value', $instance->get($k));
+		self::assertEquals('another_value', $instance[$k]);
+
+		$entry = $this->database->selectFirst(DBKeyValueStorage::DB_KEY_VALUE_TABLE, ['updated_at'], ['k' => $k]);
+		self::assertNotEmpty($entry);
+
+		$updateAtAfter = $entry['updated_at'];
+
+		self::assertLessThanOrEqual($updateAt, $updateAtAfter);
 	}
 }