diff --git a/Chapter-3-microservice-extraction/Fitnet.Common/Fitnet.Common.IntegrationTestsToolbox/Fitnet.Common.IntegrationTestsToolbox.csproj b/Chapter-3-microservice-extraction/Fitnet.Common/Fitnet.Common.IntegrationTestsToolbox/Fitnet.Common.IntegrationTestsToolbox.csproj
index 7ea82248..b9898558 100644
--- a/Chapter-3-microservice-extraction/Fitnet.Common/Fitnet.Common.IntegrationTestsToolbox/Fitnet.Common.IntegrationTestsToolbox.csproj
+++ b/Chapter-3-microservice-extraction/Fitnet.Common/Fitnet.Common.IntegrationTestsToolbox/Fitnet.Common.IntegrationTestsToolbox.csproj
@@ -7,6 +7,7 @@
     <ItemGroup>
         <PackageReference Include="Bogus" Version="34.0.2" />
         <PackageReference Include="FluentAssertions" Version="6.10.0" />
+        <PackageReference Include="MassTransit" Version="8.1.1" />
         <PackageReference Include="Verify.Xunit" Version="19.11.2" />
         <PackageReference Include="Testcontainers" Version="3.0.0" />
         <PackageReference Include="Testcontainers.PostgreSql" Version="3.0.0" />