diff --git a/tsconfig.json b/tsconfig.json
index af8c916..7b03fce 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "es2020",
+    "target": "es2018",
     "module": "commonjs",
     "allowJs": true,
     "checkJs": false,