diff --git a/test/Concurrency/ShrinkWrap.swift b/test/Concurrency/ShrinkWrap.swift
index 7450d0af773e8..1d7ad9ef71b68 100644
--- a/test/Concurrency/ShrinkWrap.swift
+++ b/test/Concurrency/ShrinkWrap.swift
@@ -5,6 +5,7 @@
 
 // REQUIRES: executable_test
 // REQUIRES: concurrency
+// REQUIRES: concurrency_runtime
 
 // rdar://124277662
 // XFAIL: freestanding
diff --git a/test/Concurrency/optional_isolated_parameters.swift b/test/Concurrency/optional_isolated_parameters.swift
index 048c8cb9ab82f..a631ab0a20022 100644
--- a/test/Concurrency/optional_isolated_parameters.swift
+++ b/test/Concurrency/optional_isolated_parameters.swift
@@ -5,6 +5,7 @@
 
 // REQUIRES: executable_test
 // REQUIRES: concurrency
+// REQUIRES: concurrency_runtime
 
 // rdar://124277662
 // XFAIL: freestanding