diff --git a/Chapter-2/CalculatorApplication/V4/CalculatorService/packages.config b/Chapter-2/CalculatorApplication/V4/CalculatorService/packages.config
index a39fff8..9f13847 100644
--- a/Chapter-2/CalculatorApplication/V4/CalculatorService/packages.config
+++ b/Chapter-2/CalculatorApplication/V4/CalculatorService/packages.config
@@ -7,5 +7,5 @@
   <package id="Microsoft.ServiceFabric.Services" version="2.8.211" targetFramework="net452" />
   <package id="Microsoft.ServiceFabric.Services.Remoting" version="2.8.211" targetFramework="net452" />
   <package id="Microsoft.ServiceFabric.Services.Wcf" version="2.8.211" targetFramework="net452" />
-  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net452" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net452" />
 </packages>
\ No newline at end of file