diff --git a/WPF-Demo/SelectLine.Api.WPFDemo/packages.config b/WPF-Demo/SelectLine.Api.WPFDemo/packages.config
index a989d18..6f06996 100644
--- a/WPF-Demo/SelectLine.Api.WPFDemo/packages.config
+++ b/WPF-Demo/SelectLine.Api.WPFDemo/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.AspNet.WebApi.Client" version="5.2.7" 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.Net.Http" version="4.3.4" targetFramework="net461" />
   <package id="System.Net.Http.Formatting.Extension" version="5.2.3.0" targetFramework="net461" />
   <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />