diff --git a/01-upload-a-file/csharp/csharp.csproj b/01-upload-a-file/csharp/csharp.csproj
index 6d235cc6..30cdec5f 100644
--- a/01-upload-a-file/csharp/csharp.csproj
+++ b/01-upload-a-file/csharp/csharp.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="nunit" Version="3.11.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />