diff --git a/types/w3c-permissions/index.d.ts b/types/w3c-permissions/index.d.ts
index 1cb1aaea0d..b7658c2e6c 100644
--- a/types/w3c-permissions/index.d.ts
+++ b/types/w3c-permissions/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for W3C Permissions API
+// Type definitions for W3C Permissions API 1.0
 // Project: https://www.w3.org/TR/permissions/
 // Definitions by: Julien Bérubé <https://github.com/jberube>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped