diff --git a/src/ActiveCampaignNet.csproj b/src/ActiveCampaignNet.csproj
index 42d79b5..f2fc5d7 100644
--- a/src/ActiveCampaignNet.csproj
+++ b/src/ActiveCampaignNet.csproj
@@ -19,7 +19,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NuGet.CommandLine" Version="4.1.0" />
   </ItemGroup>