diff --git a/Packages.props b/Packages.props
index 6ffd0292..82ffb7a4 100644
--- a/Packages.props
+++ b/Packages.props
@@ -9,6 +9,7 @@
     <PackageReference Update="Microsoft.NET.Test.Sdk" Version="17.3.2" />
     <PackageReference Update="Microsoft.Win32.Registry" Version="4.7.0" />
     <PackageReference Update="MSBuild.ProjectCreation" Version="8.3.0" />
+    <PackageReference Update="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Update="Shouldly" Version="4.1.0" />
     <PackageReference Update="xunit" Version="2.4.2" />
     <PackageReference Update="xunit.runner.visualstudio" Version="2.4.5" />
diff --git a/src/Artifacts.UnitTests/Microsoft.Build.Artifacts.UnitTests.csproj b/src/Artifacts.UnitTests/Microsoft.Build.Artifacts.UnitTests.csproj
index 48ed434e..ce540feb 100644
--- a/src/Artifacts.UnitTests/Microsoft.Build.Artifacts.UnitTests.csproj
+++ b/src/Artifacts.UnitTests/Microsoft.Build.Artifacts.UnitTests.csproj
@@ -6,6 +6,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="MSBuild.ProjectCreation" />
+    <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="Shouldly" />
     <PackageReference Include="xunit" />
     <PackageReference Include="xunit.runner.visualstudio" />
diff --git a/src/CentralPackageVersions.UnitTests/Microsoft.Build.CentralPackageVersions.UnitTests.csproj b/src/CentralPackageVersions.UnitTests/Microsoft.Build.CentralPackageVersions.UnitTests.csproj
index 07239052..fc0a54f2 100644
--- a/src/CentralPackageVersions.UnitTests/Microsoft.Build.CentralPackageVersions.UnitTests.csproj
+++ b/src/CentralPackageVersions.UnitTests/Microsoft.Build.CentralPackageVersions.UnitTests.csproj
@@ -6,6 +6,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="MSBuild.ProjectCreation" />
+    <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="Shouldly" />
     <PackageReference Include="xunit" />
     <PackageReference Include="xunit.runner.visualstudio" />
diff --git a/src/NoTargets.UnitTests/Microsoft.Build.NoTargets.UnitTests.csproj b/src/NoTargets.UnitTests/Microsoft.Build.NoTargets.UnitTests.csproj
index 10cc30b3..96160ede 100644
--- a/src/NoTargets.UnitTests/Microsoft.Build.NoTargets.UnitTests.csproj
+++ b/src/NoTargets.UnitTests/Microsoft.Build.NoTargets.UnitTests.csproj
@@ -6,6 +6,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="MSBuild.ProjectCreation" />
+    <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="Shouldly" />
     <PackageReference Include="xunit" />
     <PackageReference Include="xunit.runner.visualstudio" />
diff --git a/src/Traversal.UnitTests/Microsoft.Build.Traversal.UnitTests.csproj b/src/Traversal.UnitTests/Microsoft.Build.Traversal.UnitTests.csproj
index 4fc653d3..88945164 100644
--- a/src/Traversal.UnitTests/Microsoft.Build.Traversal.UnitTests.csproj
+++ b/src/Traversal.UnitTests/Microsoft.Build.Traversal.UnitTests.csproj
@@ -6,6 +6,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="MSBuild.ProjectCreation" />
+    <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="Shouldly" />
     <PackageReference Include="xunit" />
     <PackageReference Include="xunit.runner.visualstudio" />