diff --git a/tsconfig.json b/tsconfig.json
index 5fd5025..580fd21 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,7 +4,7 @@
     "module": "esnext",
     "lib": [
       "dom",
-      "es2017"
+      "es2020"
     ],
     "declaration": true,
     "declarationDir": "./types",