diff --git a/tsconfig.json b/tsconfig.json
index fdb93c5..43d723a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,11 +2,10 @@
 	"compilerOptions": {
 		"module": "es2015",
 		"moduleResolution": "node",
+		"target": "es2017",
 		"lib": [
-			"dom",
-			"es2015"
+			"dom"
 		],
-		"target": "es2015",
 		"strict": true
 	},
 	"include": [