diff --git a/tsconfig.json b/tsconfig.json
index 60cf981..35d51ea 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "ES2018",
+    "target": "es5",
     "lib": [
       "dom",
       "dom.iterable",