diff --git a/src/Typesafe.Mailgun/Typesafe.Mailgun.csproj b/src/Typesafe.Mailgun/Typesafe.Mailgun.csproj
index 70647e7..97fe06d 100644
--- a/src/Typesafe.Mailgun/Typesafe.Mailgun.csproj
+++ b/src/Typesafe.Mailgun/Typesafe.Mailgun.csproj
@@ -19,7 +19,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.CSharp" Version="4.5.0" />
-        <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     </ItemGroup>
 
     <ItemGroup>