diff --git a/CSharpClassLibrary/CSharpClassLibrary.csproj b/CSharpClassLibrary/CSharpClassLibrary.csproj
index fd41f77..412eeea 100644
--- a/CSharpClassLibrary/CSharpClassLibrary.csproj
+++ b/CSharpClassLibrary/CSharpClassLibrary.csproj
@@ -40,7 +40,7 @@
     <PackageReference Include="IronPython.Interpreter" Version="2.7.4" />
     <PackageReference Include="IronPython.StdLib" Version="2.7.11" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="6.0.0" />
-    <PackageReference Include="NHibernate" Version="5.3.10" />
+    <PackageReference Include="NHibernate" Version="5.4.9" />
     <PackageReference Include="Nito.Try" Version="1.1.1" />
     <PackageReference Include="Serilog" Version="2.10.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="4.0.0" />