diff --git a/test/EFCore.PG.FunctionalTests/F1NpgsqlFixture.cs b/test/EFCore.PG.FunctionalTests/F1NpgsqlFixture.cs
index 6f45f51e6..5bf54b8fb 100644
--- a/test/EFCore.PG.FunctionalTests/F1NpgsqlFixture.cs
+++ b/test/EFCore.PG.FunctionalTests/F1NpgsqlFixture.cs
@@ -1,6 +1,7 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.TestModels.ConcurrencyModel;
 using Microsoft.EntityFrameworkCore.TestUtilities;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata.Conventions;
 using Npgsql.EntityFrameworkCore.PostgreSQL.TestUtilities;
 
 namespace Npgsql.EntityFrameworkCore.PostgreSQL
@@ -9,6 +10,9 @@ public class F1NpgsqlFixture : F1RelationalFixture
     {
         protected override ITestStoreFactory TestStoreFactory => NpgsqlTestStoreFactory.Instance;
 
+        public override ModelBuilder CreateModelBuilder()
+            => new ModelBuilder(NpgsqlConventionSetBuilder.Build());
+
         protected override void OnModelCreating(ModelBuilder modelBuilder, DbContext context)
         {
             base.OnModelCreating(modelBuilder, context);