diff --git a/phone/tsconfig.json b/phone/tsconfig.json
index 6e0e17506..5a19f5f48 100644
--- a/phone/tsconfig.json
+++ b/phone/tsconfig.json
@@ -4,6 +4,7 @@
     "target": "es5",
     "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
+    "downlevelIteration": true,
     "skipLibCheck": true,
     "esModuleInterop": true,
     "allowSyntheticDefaultImports": true,