diff --git a/backend/tests/Agon.Domain.Tests/Agon.Domain.Tests.csproj b/backend/tests/Agon.Domain.Tests/Agon.Domain.Tests.csproj
index 99a6739..98d9470 100644
--- a/backend/tests/Agon.Domain.Tests/Agon.Domain.Tests.csproj
+++ b/backend/tests/Agon.Domain.Tests/Agon.Domain.Tests.csproj
@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="8.0.1" />
-    <PackageReference Include="FluentAssertions" Version="8.8.0" />
+    <PackageReference Include="FluentAssertions" Version="8.9.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />