diff --git a/test/Concurrency/Runtime/exclusivity.swift b/test/Concurrency/Runtime/exclusivity.swift
index 37ffd7fa2feeb..54fc08cb4f7cd 100644
--- a/test/Concurrency/Runtime/exclusivity.swift
+++ b/test/Concurrency/Runtime/exclusivity.swift
@@ -5,6 +5,7 @@
 
 // REQUIRES: concurrency_runtime
 // UNSUPPORTED: back_deployment_runtime
+// UNSUPPORTED: OS=wasi
 
 // This test makes sure that:
 //