diff --git a/Source/.Net/ApiTransformer.csproj b/Source/.Net/ApiTransformer.csproj
index 931dd51..f034ad9 100644
--- a/Source/.Net/ApiTransformer.csproj
+++ b/Source/.Net/ApiTransformer.csproj
@@ -6,7 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="AdaptiveCards.Templating" Version="0.1.0-alpha1" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup>