diff --git a/test/stdlib/NSStringAPI.swift b/test/stdlib/NSStringAPI.swift
index c29ca48ce2269..bff90e261f881 100644
--- a/test/stdlib/NSStringAPI.swift
+++ b/test/stdlib/NSStringAPI.swift
@@ -12,6 +12,9 @@
 // Tests for the NSString APIs as exposed by String
 //
 
+// Temporarily disabled as it is taking too long to execute.
+// REQUIRES: rdar106755810
+
 import StdlibUnittest