diff --git a/src/Lucene.Net.TestFramework/Lucene.Net.TestFramework.csproj b/src/Lucene.Net.TestFramework/Lucene.Net.TestFramework.csproj
index a18ad8c..eecdfac 100644
--- a/src/Lucene.Net.TestFramework/Lucene.Net.TestFramework.csproj
+++ b/src/Lucene.Net.TestFramework/Lucene.Net.TestFramework.csproj
@@ -83,6 +83,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="$(MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion_NET4_5_1)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="$(MicrosoftExtensionsConfigurationJsonPackageVersion_NET4_5_1)" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Xml" Version="$(MicrosoftExtensionsConfigurationXmlPackageVersion_NET4_5_1)" />
+    <PackageReference Include="Newtonsoft.Json" Version="$(NewtonsoftJsonPackageVersion)" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">