diff --git a/tests/SimPle.IntegrationTests/SimPle.IntegrationTests.csproj b/tests/SimPle.IntegrationTests/SimPle.IntegrationTests.csproj
index 9c80c33..a044b02 100644
--- a/tests/SimPle.IntegrationTests/SimPle.IntegrationTests.csproj
+++ b/tests/SimPle.IntegrationTests/SimPle.IntegrationTests.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.0" />
-    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+    <PackageReference Include="FluentAssertions" Version="8.10.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.11" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="8.0.11" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="8.0.11" />
diff --git a/tests/SimPle.UnitTests/SimPle.UnitTests.csproj b/tests/SimPle.UnitTests/SimPle.UnitTests.csproj
index eada308..bf53ed9 100644
--- a/tests/SimPle.UnitTests/SimPle.UnitTests.csproj
+++ b/tests/SimPle.UnitTests/SimPle.UnitTests.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="6.0.0" />
-    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+    <PackageReference Include="FluentAssertions" Version="8.10.0" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="8.0.2" />
     <!-- FakeTimeProvider. Module 6's band boundaries (15/30/60s) and its 2h/30min expiries are only provable with
          an injected, controllable clock — a wall-clock test cannot prove a boundary transition (brief Risk #8). -->