diff --git a/tests/Serilog.Sinks.Mongodb.TimeSeries.Tests/Serilog.Sinks.Mongodb.TimeSeries.Tests.csproj b/tests/Serilog.Sinks.Mongodb.TimeSeries.Tests/Serilog.Sinks.Mongodb.TimeSeries.Tests.csproj
index 71441e8..220b13b 100644
--- a/tests/Serilog.Sinks.Mongodb.TimeSeries.Tests/Serilog.Sinks.Mongodb.TimeSeries.Tests.csproj
+++ b/tests/Serilog.Sinks.Mongodb.TimeSeries.Tests/Serilog.Sinks.Mongodb.TimeSeries.Tests.csproj
@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="FluentAssertions" Version="6.4.0" />
+        <PackageReference Include="FluentAssertions" Version="6.5.1" />
         <PackageReference Include="GitHubActionsTestLogger" Version="1.2.0" />
         <PackageReference Include="Moq" Version="4.16.1" />
         <PackageReference Include="nunit" Version="3.13.2" />