diff --git a/learn/csharp/Orleans/SiloHost3/communication/EmployeeSiloHost/packages.config b/learn/csharp/Orleans/SiloHost3/communication/EmployeeSiloHost/packages.config
index ac6a737..40dbc17 100644
--- a/learn/csharp/Orleans/SiloHost3/communication/EmployeeSiloHost/packages.config
+++ b/learn/csharp/Orleans/SiloHost3/communication/EmployeeSiloHost/packages.config
@@ -12,7 +12,7 @@
   <package id="Microsoft.Orleans.OrleansProviders" version="1.5.0" targetFramework="net461" />
   <package id="Microsoft.Orleans.OrleansRuntime" version="1.5.0" targetFramework="net461" />
   <package id="Microsoft.Orleans.Server" version="1.5.0" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net461" />
   <package id="System.Collections" version="4.3.0" targetFramework="net461" />
   <package id="System.Collections.Concurrent" version="4.3.0" targetFramework="net461" />
   <package id="System.Collections.Immutable" version="1.3.1" targetFramework="net461" />