diff --git a/source/Trek-12/Tests/Tests.csproj b/source/Trek-12/Tests/Tests.csproj
index 2fea905..4ea534a 100644
--- a/source/Trek-12/Tests/Tests.csproj
+++ b/source/Trek-12/Tests/Tests.csproj
@@ -10,8 +10,9 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0"/>
-        <PackageReference Include="xunit" Version="2.4.2"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
+        <PackageReference Include="Moq" Version="4.20.70" />
+        <PackageReference Include="xunit" Version="2.4.2" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>