diff --git a/src/restsharp_flurl_refit.test/restsharp_flurl_refit.test.csproj b/src/restsharp_flurl_refit.test/restsharp_flurl_refit.test.csproj
index 3c73869..817da09 100644
--- a/src/restsharp_flurl_refit.test/restsharp_flurl_refit.test.csproj
+++ b/src/restsharp_flurl_refit.test/restsharp_flurl_refit.test.csproj
@@ -10,7 +10,7 @@
     <PackageReference Include="autofixture" Version="4.11.0" />
     <PackageReference Include="CompareObject" Version="1.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="nsubstitute" Version="4.2.1" />
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />