diff --git a/src/Gistlyn.AppMac/packages.config b/src/Gistlyn.AppMac/packages.config
index 9f87c9e..758d9d0 100644
--- a/src/Gistlyn.AppMac/packages.config
+++ b/src/Gistlyn.AppMac/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="ServiceStack" version="4.0.62" targetFramework="net45" />
+  <package id="ServiceStack" version="5.9.2" targetFramework="net45" />
   <package id="ServiceStack.Client" version="4.0.62" targetFramework="net45" />
   <package id="ServiceStack.Common" version="4.0.62" targetFramework="net45" />
   <package id="ServiceStack.Interfaces" version="4.0.62" targetFramework="net45" />