diff --git a/lib/Smarty/src/Smarty.php b/lib/Smarty/src/Smarty.php
index fbb7314..b53a36c 100644
--- a/lib/Smarty/src/Smarty.php
+++ b/lib/Smarty/src/Smarty.php
@@ -54,7 +54,7 @@ class Smarty extends \Smarty\TemplateBase {
 	/**
 	 * smarty version
 	 */
-	const SMARTY_VERSION = '5.6.0';
+	const SMARTY_VERSION = '5.7.0';
 
 	/**
 	 * define caching modes
diff --git a/lib/Smarty/src/TemplateBase.php b/lib/Smarty/src/TemplateBase.php
index f01d110..e06b591 100644
--- a/lib/Smarty/src/TemplateBase.php
+++ b/lib/Smarty/src/TemplateBase.php
@@ -104,7 +104,7 @@ abstract class TemplateBase extends Data {
 		}
 		// register the object
 		$smarty->registered_objects[$object_name] =
-			[$object, (array)$allowed_methods_properties, (boolean)$format, (array)$block_methods];
+			[$object, (array)$allowed_methods_properties, (bool)$format, (array)$block_methods];
 		return $this;
 	}