diff --git a/src/Helpers/Assets.php b/src/Helpers/Assets.php
index 678de702..1a798740 100644
--- a/src/Helpers/Assets.php
+++ b/src/Helpers/Assets.php
@@ -16,12 +16,12 @@ class Assets extends \Chibi\Util\Assets
 
 	public function addStylesheet($path)
 	{
-		return parent::addStylesheet('/media/css/' . $path);
+		return parent::addStylesheet($this->decorateUrl('/media/css/' . $path));
 	}
 
 	public function addScript($path)
 	{
-		return parent::addScript('/media/js/' . $path);
+		return parent::addScript($this->decorateUrl('/media/js/' . $path));
 	}
 
 	public function transformHtml($html)
@@ -47,4 +47,10 @@ class Assets extends \Chibi\Util\Assets
 		$html = str_replace('</body>', $bodySnippet . '</body>', $html);
 		return $html;
 	}
+
+
+	private function decorateUrl($url)
+	{
+		return $url . '?' . PropertyModel::get(PropertyModel::EngineVersion);
+	}
 }