diff --git a/tsconfig.json b/tsconfig.json
index 2a3c126..3ea4961 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,7 +8,7 @@
     ],
     "moduleResolution": "node",
     "module": "es2015",
-    "target": "es2015",
+    "target": "es5",
     "noImplicitAny": true,
     "sourceMap": true,
     "noUnusedParameters": true,