diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 6d46d36d167f4..67c85147aed22 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -4760,7 +4760,7 @@ namespace ts {
         UMD = 3,
         System = 4,
         ES2015 = 5,
-        ESNext = 6
+        ESNext = 99
     }
 
     export const enum JsxEmit {