diff --git a/csharp/tutorials/nullable-reference-migration/start/SimpleFeedReader.Tests/SimpleFeedReader.Tests.csproj b/csharp/tutorials/nullable-reference-migration/start/SimpleFeedReader.Tests/SimpleFeedReader.Tests.csproj
index f5363c5ad4b..01830096ab4 100644
--- a/csharp/tutorials/nullable-reference-migration/start/SimpleFeedReader.Tests/SimpleFeedReader.Tests.csproj
+++ b/csharp/tutorials/nullable-reference-migration/start/SimpleFeedReader.Tests/SimpleFeedReader.Tests.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.0" />
-    <PackageReference Include="Moq" Version="4.14.5" />
+    <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
   </ItemGroup>