diff --git a/BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj b/BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
index 1f91474b..7465d2f9 100644
--- a/BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
+++ b/BitFaster.Caching.UnitTests.Std/BitFaster.Caching.UnitTests.Std.csproj
@@ -10,7 +10,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="FluentAssertions" Version="7.0.0" />
+    <PackageReference Include="FluentAssertions" Version="8.1.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Moq" Version="4.20.70" />
     <PackageReference Include="ObjectLayoutInspector" Version="0.1.4" />
diff --git a/BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj b/BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
index 93a5a179..f75a1d22 100644
--- a/BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
+++ b/BitFaster.Caching.UnitTests/BitFaster.Caching.UnitTests.csproj
@@ -10,7 +10,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="FluentAssertions" Version="7.0.0" />
+    <PackageReference Include="FluentAssertions" Version="8.1.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Moq" Version="4.20.69" />
     <PackageReference Include="ObjectLayoutInspector" Version="0.1.4" />