diff --git a/IOST.Net45/packages.config b/IOST.Net45/packages.config
index 0236c3f..cc244c4 100644
--- a/IOST.Net45/packages.config
+++ b/IOST.Net45/packages.config
@@ -6,7 +6,7 @@
   <package id="Grpc.Core.Api" version="1.22.0" targetFramework="net45" />
   <package id="libsodium" version="1.0.17.1" targetFramework="net45" />
   <package id="Microsoft.NETCore.Platforms" version="1.0.1" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net45" />
   <package id="SHA3.Net" version="1.1.1" targetFramework="net45" />
   <package id="System.Interactive.Async" version="3.2.0" targetFramework="net45" />
   <package id="System.ValueTuple" version="4.5.0" targetFramework="net45" />