diff --git a/types/workbox-sw/v3/index.d.ts b/types/workbox-sw/v3/index.d.ts
index 4d94cec7ec..c7efdd9668 100644
--- a/types/workbox-sw/v3/index.d.ts
+++ b/types/workbox-sw/v3/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/GoogleChrome/workbox
 // Definitions by: Frederik Wessberg <https://github.com/wessberg>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.6
+// TypeScript Version: 3.0
 
 /**
  * ===== BroadcastCacheUpdate =====