diff --git a/XSocket/packages.config b/XSocket/packages.config
index 3afd855..5c9f594 100644
--- a/XSocket/packages.config
+++ b/XSocket/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="SuperSocket.ClientEngine.Core" version="0.10.0" targetFramework="net461" />
   <package id="System.Collections.Immutable" version="1.5.0" targetFramework="net461" />
   <package id="System.Collections.Specialized" version="4.3.0" targetFramework="net461" />