diff --git a/lib/rules/subsystem.js b/lib/rules/subsystem.js
index 121fe1c..4b6264c 100644
--- a/lib/rules/subsystem.js
+++ b/lib/rules/subsystem.js
@@ -25,6 +25,7 @@ const validSubsystems = [
 , 'src'
 , 'test'
 , 'tools'
+, 'wasm'
 , 'win'
 
   // core libs
@@ -69,6 +70,7 @@ const validSubsystems = [
 , 'util'
 , 'v8'
 , 'vm'
+, 'wasi'
 , 'worker'
 , 'zlib'
 ]