diff --git a/src/RpcLite/RpcLite.csproj b/src/RpcLite/RpcLite.csproj
index c7bda3d..4d22378 100644
--- a/src/RpcLite/RpcLite.csproj
+++ b/src/RpcLite/RpcLite.csproj
@@ -38,7 +38,7 @@
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net45' ">
     <PackageReference Include="Microsoft.Net.Http" Version="2.2.29" />
-    <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
     <Reference Include="System" />
@@ -46,7 +46,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="SourceLink.Embed.AllSourceFiles" Version="2.8.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/src/ServiceTest/ServiceTest.ClientTest/ServiceTest.ClientTest.csproj b/src/ServiceTest/ServiceTest.ClientTest/ServiceTest.ClientTest.csproj
index 37b03a6..06ce132 100644
--- a/src/ServiceTest/ServiceTest.ClientTest/ServiceTest.ClientTest.csproj
+++ b/src/ServiceTest/ServiceTest.ClientTest/ServiceTest.ClientTest.csproj
@@ -25,7 +25,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="protobuf-net" Version="2.4.0" />
     <PackageReference Include="System.Runtime.Serialization.Json" Version="4.3.0" />
     <PackageReference Include="System.Runtime.Serialization.Primitives" Version="4.3.0" />