diff --git a/Benchmark/Benchmark.csproj b/Benchmark/Benchmark.csproj
index 7f88058..8432bad 100644
--- a/Benchmark/Benchmark.csproj
+++ b/Benchmark/Benchmark.csproj
@@ -16,7 +16,7 @@
     <PackageReference Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.14.0" />
     <PackageReference Include="Ceras" Version="4.1.7" />
     <PackageReference Include="Ceras.ImmutableCollections" Version="1.0.0" />
-    <PackageReference Include="FluentAssertions" Version="8.2.0" />
+    <PackageReference Include="FluentAssertions" Version="8.8.0" />
     <PackageReference Include="Hyperion" Version="0.12.0" />
     <PackageReference Include="MessagePack" Version="2.3.85" />
     <PackageReference Include="MessagePack.ImmutableCollection" Version="2.3.85" />
diff --git a/Tests/Apex.Serialization.Tests/Apex.Serialization.Tests.csproj b/Tests/Apex.Serialization.Tests/Apex.Serialization.Tests.csproj
index 4f85255..be08763 100644
--- a/Tests/Apex.Serialization.Tests/Apex.Serialization.Tests.csproj
+++ b/Tests/Apex.Serialization.Tests/Apex.Serialization.Tests.csproj
@@ -17,7 +17,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="FluentAssertions" Version="8.2.0" />
+    <PackageReference Include="FluentAssertions" Version="8.8.0" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageReference Include="System.Collections.Immutable" Version="9.0.5" />