diff --git a/.gitignore b/.gitignore
index 65c3736..58075ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /.debug
 /config/config.ini
 /public/robots.txt
+/vendor
diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 525bff2..0000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "lib/index"]
-	path = lib/index
-	url = https://git.flash.moe/flash/index.git
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..5d3b9b5
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,26 @@
+{
+    "minimum-stability": "dev",
+    "prefer-stable": true,
+    "require": {
+        "flashwave/index": "*"
+    },
+    "autoload": {
+        "classmap": [
+            "database"
+        ],
+        "psr-4": {
+            "Mince\\": "src"
+        }
+    },
+    "scripts": {
+        "post-install-cmd": [
+            "./tools/migrate"
+        ]
+    },
+    "config": {
+        "preferred-install": "dist",
+        "allow-plugins": {
+            "composer/installers": true
+        }
+    }
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..f430525
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,65 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "11f8c90aff3c23a448844cee09bcd23c",
+    "packages": [
+        {
+            "name": "flashwave/index",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://git.flash.moe/flash/index.git",
+                "reference": "553b7c4a14aa7f2403c87ce474933986ac17d040"
+            },
+            "require": {
+                "ext-mbstring": "*",
+                "php": ">=8.1"
+            },
+            "require-dev": {
+                "phpstan/phpstan": "^1.10",
+                "phpunit/phpunit": "^10.2"
+            },
+            "suggest": {
+                "ext-mysqli": "Support for the Index\\Data\\MariaDB namespace (both mysqlnd and libmysql are supported).",
+                "ext-sqlite3": "Support for the Index\\Data\\SQLite namespace."
+            },
+            "default-branch": true,
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "index.php"
+                ],
+                "psr-4": {
+                    "Index\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "bsd-3-clause-clear"
+            ],
+            "authors": [
+                {
+                    "name": "flashwave",
+                    "email": "packagist@flash.moe",
+                    "homepage": "https://flash.moe",
+                    "role": "mom"
+                }
+            ],
+            "description": "Composer package for the common library for my projects.",
+            "homepage": "https://railgun.sh/index",
+            "time": "2023-08-03T01:29:57+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "dev",
+    "stability-flags": [],
+    "prefer-stable": true,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
+}
diff --git a/database/2023_08_16_161818_existing_structure.php b/database/2023_08_16_161818_existing_structure.php
new file mode 100644
index 0000000..2ca7acd
--- /dev/null
+++ b/database/2023_08_16_161818_existing_structure.php
@@ -0,0 +1,46 @@
+<?php
+use Index\Data\IDbConnection;
+use Index\Data\Migration\IDbMigration;
+
+final class ExistingStructure_20230816_161818 implements IDbMigration {
+    public function migrate(IDbConnection $conn): void {
+        $hasWhiteList2020 = false;
+        $hasWhiteList2022 = false;
+
+        // check if the old tables exist
+        $tables = $conn->query('SHOW TABLES');
+        while($tables->next()) {
+            $tableName = $tables->getString(0);
+            if($tableName === 'whitelist')
+                $hasWhiteList2020 = true;
+            elseif($tableName === 'whitelist_2022')
+                $hasWhiteList2022 = true;
+            if($hasWhiteList2020 && $hasWhiteList2022)
+                break;
+        }
+
+        if(!$hasWhiteList2020)
+            $conn->execute('
+                CREATE TABLE whitelist (
+                    flashii_id         INT(10) UNSIGNED NOT NULL,
+                    minecraft_username VARCHAR(255)     NOT NULL COLLATE "utf8mb4_unicode_ci",
+                    whitelist_added    TIMESTAMP        NOT NULL DEFAULT current_timestamp(),
+                    UNIQUE KEY whitelist_unique (flashii_id, minecraft_username),
+                    KEY whitelist_flashii_key   (flashii_id),
+                    KEY whitelist_minecraft_key (minecraft_username)
+                ) ENGINE=InnoDB COLLATE="latin1_swedish_ci";
+            ');
+
+        if(!$hasWhiteList2022)
+            $conn->execute('
+                CREATE TABLE whitelist_2022 (
+                    flashii_id         INT(10) UNSIGNED NOT NULL,
+                    minecraft_username VARCHAR(255)     NOT NULL COLLATE "utf8mb4_unicode_ci",
+                    whitelist_added    TIMESTAMP        NOT NULL DEFAULT current_timestamp(),
+                    UNIQUE KEY whitelist_2022_unique (flashii_id, minecraft_username),
+                    KEY whitelist_2022_flashii_key   (flashii_id),
+                    KEY whitelist_2022_minecraft_key (minecraft_username)
+                ) ENGINE=InnoDB COLLATE="latin1_swedish_ci";
+            ');
+    }
+}
diff --git a/lib/index b/lib/index
deleted file mode 160000
index bce5ba7..0000000
--- a/lib/index
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit bce5ba77a268ecd6338d0e3520e41ff4c40cbeda
diff --git a/mince.php b/mince.php
index 90138f0..6c1e9a7 100644
--- a/mince.php
+++ b/mince.php
@@ -1,7 +1,6 @@
 <?php
 namespace Mince;
 
-use Index\Autoloader;
 use Index\Environment;
 use Index\XString;
 use Index\Data\ConnectionFailedException;
@@ -11,14 +10,13 @@ define('MCR_STARTUP', microtime(true));
 define('MCR_ROOT', __DIR__);
 define('MCR_DEBUG', is_file(MCR_ROOT . '/.debug'));
 define('MCR_DIR_SRC', MCR_ROOT . '/src');
-define('MCR_DIR_LIB', MCR_ROOT . '/lib');
 define('MCR_DIR_PUB', MCR_ROOT . '/public');
 define('MCR_DIR_PRV', MCR_ROOT . '/private');
 define('MCR_DIR_CFG', MCR_ROOT . '/config');
+define('MCR_DIR_MIG', MCR_ROOT . '/database');
 
-require_once MCR_DIR_LIB . '/index/index.php';
+require_once MCR_ROOT . '/vendor/autoload.php';
 
-Autoloader::addNamespace(__NAMESPACE__, MCR_DIR_SRC);
 Environment::setDebug(MCR_DEBUG);
 
 $config = parse_ini_file(MCR_DIR_CFG . '/config.ini');
diff --git a/tools/migrate b/tools/migrate
new file mode 100755
index 0000000..37de7db
--- /dev/null
+++ b/tools/migrate
@@ -0,0 +1,35 @@
+#!/usr/bin/env php
+<?php
+use Index\Data\Migration\DbMigrationManager;
+use Index\Data\Migration\FsDbMigrationRepo;
+
+require_once __DIR__ . '/../mince.php';
+
+try {
+    touch(MCR_ROOT . '/.migrating');
+    chmod(MCR_ROOT . '/.migrating', 0777);
+
+    echo 'Creating migration manager...' . PHP_EOL;
+    $manager = new DbMigrationManager($db);
+
+    echo 'Preparing to run migrations...' . PHP_EOL;
+    $manager->init();
+
+    echo 'Creating migration repository...' . PHP_EOL;
+    $repo = new FsDbMigrationRepo(MCR_DIR_MIG);
+
+    echo 'Running migrations...' . PHP_EOL;
+    $completed = $manager->processMigrations($repo);
+
+    if(empty($completed)) {
+        echo 'There were no migrations to run!' . PHP_EOL;
+    } else {
+        echo 'The following migrations have been completed:' . PHP_EOL;
+        foreach($completed as $migration)
+            echo '  - ' . $migration . PHP_EOL;
+    }
+
+    echo PHP_EOL;
+} finally {
+    unlink(MCR_ROOT . '/.migrating');
+}
diff --git a/tools/new-migration b/tools/new-migration
new file mode 100755
index 0000000..81bc030
--- /dev/null
+++ b/tools/new-migration
@@ -0,0 +1,21 @@
+#!/usr/bin/env php
+<?php
+use Index\Data\Migration\DbMigrationManager;
+use Index\Data\Migration\FsDbMigrationRepo;
+
+require_once __DIR__ . '/../mince.php';
+
+$repo = new FsDbMigrationRepo(MCR_DIR_MIG);
+$baseName = implode(' ', array_slice($argv, 1));
+$manager = new DbMigrationManager($db);
+
+try {
+    $names = $manager->createNames($baseName);
+} catch(InvalidArgumentException $ex) {
+    echo $ex->getMessage() . PHP_EOL;
+    return;
+}
+
+$repo->saveMigrationTemplate($names->name, $manager->template($names->className));
+
+echo "Template for '{$names->className}' has been saved to {$names->name}.php." . PHP_EOL;