diff --git a/MultiProcessWorker.Test/packages.config b/MultiProcessWorker.Test/packages.config
index 9495b06..34bb3f7 100644
--- a/MultiProcessWorker.Test/packages.config
+++ b/MultiProcessWorker.Test/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="11.0.2" targetFramework="net471" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net471" />
   <package id="NUnit" version="3.10.1" targetFramework="net471" />
 </packages>
\ No newline at end of file