diff --git a/lib/rules/subsystem.js b/lib/rules/subsystem.js
index 503563d..a910baf 100644
--- a/lib/rules/subsystem.js
+++ b/lib/rules/subsystem.js
@@ -27,6 +27,7 @@ const validSubsystems = [
   'tools',
   'typings',
   'wasm',
+  'watch',
   'win',
 
   // core libs