diff --git a/ui/tsconfig.json b/ui/tsconfig.json
index cc7f89d546..8ec6b02b95 100644
--- a/ui/tsconfig.json
+++ b/ui/tsconfig.json
@@ -1,9 +1,9 @@
 {
   "compilerOptions": {
-    "target": "es6",
+    "target": "es2017",
     "module": "esNext",
     "moduleResolution": "node",
-    "lib": ["es2017", "dom", "webworker"],
+    "lib": ["es2017", "es2018", "dom", "webworker"],
     "skipLibCheck": true,
     "isolatedModules": false,
     "jsx": "react",