diff --git a/tsconfig.json b/tsconfig.json
index 4944d34..c3e75d7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "lib": [
-      "es2019"
+      "es2020"
     ],
     "target": "es2017",
     "module": "CommonJS",