diff --git a/packages/middleware-serde/tsconfig.json b/packages/middleware-serde/tsconfig.json
index 2cf4ad7301bc..38b94cda274e 100644
--- a/packages/middleware-serde/tsconfig.json
+++ b/packages/middleware-serde/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "es2016",
+    "target": "es5",
     "module": "commonjs",
     "declaration": true,
     "strict": true,