diff --git a/src/NHibernate.Test/NHibernate.Test.csproj b/src/NHibernate.Test/NHibernate.Test.csproj
index 91c13c43b92..d9e03d0df6b 100644
--- a/src/NHibernate.Test/NHibernate.Test.csproj
+++ b/src/NHibernate.Test/NHibernate.Test.csproj
@@ -67,7 +67,7 @@
     <PackageReference Include="NHibernate.Caches.Util.JsonSerializer" Version="5.9.0" />
     <PackageReference Include="System.Data.SQLite.Core" Version="1.0.117" />
     <PackageReference Include="System.Linq.Dynamic.Core" Version="1.3.3" />
-    <PackageReference Include="NSubstitute" Version="5.0.0" />
+    <PackageReference Include="NSubstitute" Version="5.1.0" />
     <PackageReference Include="NUnit" Version="3.14.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />