diff --git a/public/update.php b/public/update.php
new file mode 100644
index 0000000..bf7567b
--- /dev/null
+++ b/public/update.php
@@ -0,0 +1,146 @@
+<?php
+
+namespace BtwInstaller;
+
+class BlueTwilightUpdater
+{
+    private $baseDirectory;
+    private $composerSignature;
+
+    public function __construct()
+    {
+        $this->baseDirectory = dirname(__DIR__);
+        chdir($this->baseDirectory);
+        putenv('HOME=' . $this->baseDirectory);
+
+        // Display errors so installer never gets a WSOD!
+        ini_set('display_errors', true);
+    }
+
+    public function run()
+    {
+        if (strtoupper($_SERVER['REQUEST_METHOD']) == 'POST')
+        {
+            // Handle post
+            $this->runUpdate();
+            exit();
+        }
+        ?>
+        <html>
+        <head>
+            <title>Blue Twilight Update</title>
+        </head>
+        <body>
+        <h1>Blue Twilight Update</h1>
+        <p>This update routine ensures your Blue Twilight Composer packages are up-to-date.</p>
+        <p>To get started, simply click the button below.</p>
+        <p style="font-weight: bold; color: #ff0000;">This can take a few minutes so please be patient, and only click the button once!</p>
+        <form method="post">
+            <button type="submit">Update Composer and dependencies for me</button>
+        </form>
+
+        <hr/>
+        <h2>Got Composer?</h2>
+
+        <p>If you already have Composer installed, however, you may want to use that instead. Just run the below commands on your server, changing the path to Composer as appropriate:</p>
+        <p><em>Please note: &quot;composer.phar&quot; may actually be &quot;composer&quot; on your system.</em></p>
+        <pre>
+cd <?php echo $this->baseDirectory; ?>
+
+php artisan clear-compiled
+/path/to/composer.phar install
+        </pre>
+        </body>
+        </html>
+        <?php
+    }
+
+    private function runUpdate()
+    {
+
+        ?>
+        <h1>Updating Blue Twilight Composer packages</h1>
+
+        <ul>
+            <?php
+            $steps = [
+                ['Removing compiled cache', 'removeCompiledCached'],
+                ['Updating dependencies using Composer', 'runComposer']
+            ];
+
+            $successful = true;
+            foreach ($steps as $step)
+            {
+                echo sprintf("<li>%s...</li>%s", $step[0], PHP_EOL);
+                $result = call_user_func([$this, $step[1]]);
+
+                if (!$result)
+                {
+                    $successful = false;
+                    break;
+                }
+            }
+
+            if ($successful)
+            {
+                header('Location: admin');
+                exit();
+            }
+
+            ?>
+        </ul>
+        <?php
+    }
+
+    private function removeCompiledCached()
+    {
+        ob_start();
+        system('php artisan clear-compiled', $rc);
+        $result = ob_get_clean();
+        echo nl2br($result);
+        if ($rc != 0)
+        {
+            $this->echoError('Updating Composer packages failed');
+            return false;
+        }
+
+        $this->echoOK();
+        return true;
+    }
+
+    private function echoError($message)
+    {
+        echo sprintf("<span style=\"color: #ff0000;\">%s.</span>%s", $message, PHP_EOL);
+    }
+
+    private function echoOK($message = '')
+    {
+        echo "<span style=\"color: #008800;\">OK";
+
+        if (strlen($message) > 0)
+        {
+            echo sprintf('... %s', $message);
+        }
+
+        echo '</span>' . PHP_EOL;
+    }
+
+    private function runComposer()
+    {
+        ob_start();
+        system('php composer.phar install', $rc);
+        $result = ob_get_clean();
+        echo nl2br($result);
+        if ($rc != 0)
+        {
+            $this->echoError('Updating Composer packages failed');
+            return false;
+        }
+
+        $this->echoOK();
+        return true;
+    }
+}
+
+$installer = new BlueTwilightUpdater();
+$installer->run();
\ No newline at end of file
