diff --git a/web/tsconfig.json b/web/tsconfig.json
index 3d8768eb..96cf1311 100644
--- a/web/tsconfig.json
+++ b/web/tsconfig.json
@@ -1,5 +1,6 @@
 {
   "compilerOptions": {
+    "target": "es5",
     "baseUrl": "../",
     "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,