diff --git a/tsconfig.json b/tsconfig.json
index 756bfd8..7d84dd5 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,7 @@
   "baseDir": "src/",
   "compilerOptions": {
     "outDir": "lib",
-    "target": "es5",
+    "target": "es6",
     "lib": ["dom", "es6"],
     "module": "commonjs",
     "declaration": true,