diff --git a/tsconfig.json b/tsconfig.json
index 9423dac..4b26907 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
     "compilerOptions": {
-        "target": "es5",
+        "target": "es2017",
         "lib": [
             "dom",
             "dom.iterable",