diff --git a/src/constant/constant.ts b/src/constant/constant.ts
index c67d79b9..daa7f77a 100644
--- a/src/constant/constant.ts
+++ b/src/constant/constant.ts
@@ -128,6 +128,7 @@ export const DEFAULT_LIB_NAMES: Set<string> = new Set([
 	"lib.es2018.promise.d.ts",
 	"lib.es2018.regexp.d.ts",
 	"lib.es2018.asynciterable.d.ts",
+	"lib.es2018.asyncgenerator.d.ts",
 	"lib.es2019.array.d.ts",
 	"lib.es2019.d.ts",
 	"lib.es2019.full.d.ts",