diff --git a/tsconfig.json b/tsconfig.json
index afe174b..fd0ae77 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -9,7 +9,7 @@
 		"newLine": "lf",
 		"lib": [
 			"dom",
-			"es2016",
+			"es2015",
 			"es2017.sharedmemory"
 		],
 		"stripInternal": true,