diff --git a/tsconfig.json b/tsconfig.json
index e7fce74..ed7e34f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "es2020",
+    "target": "es2017",
     "module": "commonjs",
     "declaration": true,
     "outDir": "./built/",