diff --git a/types/twig/index.d.ts b/types/twig/index.d.ts
index 3b39c1661d..f2e35459aa 100644
--- a/types/twig/index.d.ts
+++ b/types/twig/index.d.ts
@@ -17,6 +17,7 @@ export interface Parameters {
     method?: any;
     options?: any;
     data?: any;
+	async?: any;
 }
 
 export interface Template {
diff --git a/types/twig/twig-tests.ts b/types/twig/twig-tests.ts
index c6c022bb56..39fbdc804d 100644
--- a/types/twig/twig-tests.ts
+++ b/types/twig/twig-tests.ts
@@ -14,7 +14,8 @@ const params: twig.Parameters = {
 	method: value,
 	name: value,
 	options: value,
-	href: value
+	href: value,
+	async: value
 };
 
 const temp: twig.Template = twig.twig(params);