diff --git a/addons/xterm-addon-unicode-graphemes/src/tsconfig.json b/addons/xterm-addon-unicode-graphemes/src/tsconfig.json
index f5489fcc..60824fee 100644
--- a/addons/xterm-addon-unicode-graphemes/src/tsconfig.json
+++ b/addons/xterm-addon-unicode-graphemes/src/tsconfig.json
@@ -1,10 +1,10 @@
 {
   "compilerOptions": {
     "module": "commonjs",
-    "target": "es2015",
+    "target": "es2021",
     "lib": [
       "dom",
-      "es2015"
+      "es2021"
     ],
     "rootDir": ".",
     "outDir": "../out",