diff --git a/services/Directory/FilterLists.Directory.Api/FilterLists.Directory.Api.csproj b/services/Directory/FilterLists.Directory.Api/FilterLists.Directory.Api.csproj
index 37c237246..4bd34fb34 100644
--- a/services/Directory/FilterLists.Directory.Api/FilterLists.Directory.Api.csproj
+++ b/services/Directory/FilterLists.Directory.Api/FilterLists.Directory.Api.csproj
@@ -4,6 +4,7 @@
         <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
+        <AnalysisMode>Recommended</AnalysisMode>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/services/Directory/FilterLists.Directory.Api/OpenApi/OpenApiTags.cs b/services/Directory/FilterLists.Directory.Api/OpenApi/OpenApiTags.cs
index d4e519cb5..e61c686f1 100644
--- a/services/Directory/FilterLists.Directory.Api/OpenApi/OpenApiTags.cs
+++ b/services/Directory/FilterLists.Directory.Api/OpenApi/OpenApiTags.cs
@@ -87,7 +87,7 @@ internal static class OpenApiTags
     };
 
     [UsedImplicitly]
-    internal class TagDescriptionsDocumentFilter : IDocumentFilter
+    internal sealed class TagDescriptionsDocumentFilter : IDocumentFilter
     {
         public void Apply(OpenApiDocument swaggerDoc, DocumentFilterContext context)
         {
diff --git a/services/Directory/FilterLists.Directory.Application/FilterLists.Directory.Application.csproj b/services/Directory/FilterLists.Directory.Application/FilterLists.Directory.Application.csproj
index fb378cf12..7aca7aeb6 100644
--- a/services/Directory/FilterLists.Directory.Application/FilterLists.Directory.Application.csproj
+++ b/services/Directory/FilterLists.Directory.Application/FilterLists.Directory.Application.csproj
@@ -4,19 +4,19 @@
         <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
+        <AnalysisMode>Recommended</AnalysisMode>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
     </PropertyGroup>
 
     <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
-      <NoWarn>1591;1701;1702</NoWarn>
+        <NoWarn>1591;1701;1702</NoWarn>
     </PropertyGroup>
 
     <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
-      <NoWarn>1591;1701;1702</NoWarn>
+        <NoWarn>1591;1701;1702</NoWarn>
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="JetBrains.Annotations" Version="2023.3.0"/>
         <PackageReference Include="MediatR" Version="12.2.0"/>
     </ItemGroup>
 
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs
index 4384e9289..ea81aaf85 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetLanguages.cs
@@ -37,7 +37,7 @@ public async IAsyncEnumerable<LanguageVm> Handle(Request request, [EnumeratorCan
     }
 
     [PublicAPI]
-    public record LanguageVm
+    public sealed record LanguageVm
     {
         /// <summary>
         ///     The identifier.
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs
index 9ca96698a..8be9e6cf5 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetLicenses.cs
@@ -40,7 +40,7 @@ public async IAsyncEnumerable<LicenseVm> Handle(Request request, [EnumeratorCanc
     }
 
     [PublicAPI]
-    public record LicenseVm
+    public sealed record LicenseVm
     {
         /// <summary>
         ///     The identifier.
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetListDetails.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetListDetails.cs
index 7d4df4cd6..6d6d9012c 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetListDetails.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetListDetails.cs
@@ -81,7 +81,7 @@ private sealed class Handler(QueryDbContext ctx) : IRequestHandler<Request, List
     }
 
     [PublicAPI]
-    public record ListDetailsVm
+    public sealed record ListDetailsVm
     {
         /// <summary>
         ///     The identifier.
@@ -231,7 +231,7 @@ public record ListDetailsVm
         public IEnumerable<int> DependentFilterListIds { get; init; } = [];
 
         [PublicAPI]
-        public record ViewUrlVm
+        public sealed record ViewUrlVm
         {
             /// <summary>
             ///     The segment number of the URL for the FilterList (for multi-part lists).
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetLists.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetLists.cs
index 4cb736641..e7d2117e3 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetLists.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetLists.cs
@@ -51,7 +51,7 @@ public async IAsyncEnumerable<ListVm> Handle(Request request, [EnumeratorCancell
     }
 
     [PublicAPI]
-    public record ListVm
+    public sealed record ListVm
     {
         /// <summary>
         ///     The identifier.
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs
index aaa3b2db6..25aae99fc 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetMaintainers.cs
@@ -40,7 +40,7 @@ public async IAsyncEnumerable<MaintainerVm> Handle(Request request,
     }
 
     [PublicAPI]
-    public record MaintainerVm
+    public sealed record MaintainerVm
     {
         /// <summary>
         ///     The identifier.
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetSoftware.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetSoftware.cs
index 7d639011e..3413f8447 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetSoftware.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetSoftware.cs
@@ -42,7 +42,7 @@ public async IAsyncEnumerable<SoftwareVm> Handle(Request request,
     }
 
     [PublicAPI]
-    public record SoftwareVm
+    public sealed record SoftwareVm
     {
         /// <summary>
         ///     The identifier.
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs
index 4da46d23d..e4c66310d 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetSyntaxes.cs
@@ -42,7 +42,7 @@ public async IAsyncEnumerable<SyntaxVm> Handle(Request request,
     }
 
     [PublicAPI]
-    public record SyntaxVm
+    public sealed record SyntaxVm
     {
         /// <summary>
         ///     The identifier.
diff --git a/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs b/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs
index 14f64a0d3..151b9cd01 100644
--- a/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs
+++ b/services/Directory/FilterLists.Directory.Application/Queries/GetTags.cs
@@ -38,7 +38,7 @@ public async IAsyncEnumerable<TagVm> Handle(Request request,
     }
 
     [PublicAPI]
-    public record TagVm
+    public sealed record TagVm
     {
         /// <summary>
         ///     The identifier.
diff --git a/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/FilterLists.Directory.Infrastructure.MigrationService.csproj b/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/FilterLists.Directory.Infrastructure.MigrationService.csproj
index ae1ecde73..d1ff2f478 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/FilterLists.Directory.Infrastructure.MigrationService.csproj
+++ b/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/FilterLists.Directory.Infrastructure.MigrationService.csproj
@@ -4,6 +4,7 @@
         <TargetFramework>net8.0</TargetFramework>
         <Nullable>enable</Nullable>
         <ImplicitUsings>enable</ImplicitUsings>
+        <AnalysisMode>Recommended</AnalysisMode>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/Worker.cs b/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/Worker.cs
index 36fcecfc2..426e04dd4 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/Worker.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure.MigrationService/Worker.cs
@@ -8,7 +8,7 @@
 namespace FilterLists.Directory.Infrastructure.MigrationService;
 
 /// <remarks>https://learn.microsoft.com/en-us/dotnet/aspire/database/ef-core-migrations#create-the-migration-service</remarks>
-public class Worker(
+public sealed class Worker(
     IServiceProvider serviceProvider,
     IHostApplicationLifetime hostApplicationLifetime,
     IHostEnvironment hostEnvironment) : BackgroundService
@@ -16,10 +16,10 @@ public class Worker(
     private const string ActivitySourceName = "Migrations";
     private static readonly ActivitySource ActivitySource = new(ActivitySourceName);
 
-    protected override async Task ExecuteAsync(CancellationToken cancellationToken)
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
     {
         // allow SQL Server container time to start
-        await Task.Delay(3000, cancellationToken);
+        await Task.Delay(3000, stoppingToken);
 
         // ReSharper disable once ExplicitCallerInfoArgument
         using var activity = ActivitySource.StartActivity("Migrating database", ActivityKind.Client);
@@ -29,8 +29,8 @@ protected override async Task ExecuteAsync(CancellationToken cancellationToken)
             using var scope = serviceProvider.CreateScope();
             var dbContext = scope.ServiceProvider.GetRequiredService<QueryDbContext>();
 
-            if (hostEnvironment.IsDevelopment()) await EnsureDatabaseAsync(dbContext, cancellationToken);
-            await RunMigrationAsync(dbContext, cancellationToken);
+            if (hostEnvironment.IsDevelopment()) await EnsureDatabaseAsync(dbContext, stoppingToken);
+            await RunMigrationAsync(dbContext, stoppingToken);
         }
         catch (Exception ex)
         {
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/FilterLists.Directory.Infrastructure.csproj b/services/Directory/FilterLists.Directory.Infrastructure/FilterLists.Directory.Infrastructure.csproj
index bc05edd78..42fb79400 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/FilterLists.Directory.Infrastructure.csproj
+++ b/services/Directory/FilterLists.Directory.Infrastructure/FilterLists.Directory.Infrastructure.csproj
@@ -4,10 +4,12 @@
         <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
+        <AnalysisMode>Recommended</AnalysisMode>
     </PropertyGroup>
 
     <ItemGroup>
         <PackageReference Include="Aspire.Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.1"/>
+        <PackageReference Include="JetBrains.Annotations" Version="2023.3.0"/>
     </ItemGroup>
 
 </Project>
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Context/QueryDbContext.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Context/QueryDbContext.cs
index bffc5b84a..283f3ad0a 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Context/QueryDbContext.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Context/QueryDbContext.cs
@@ -4,7 +4,7 @@
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Context;
 
 // TODO: explicitly make more readonly-ish
-public class QueryDbContext(DbContextOptions<QueryDbContext> options) : DbContext(options)
+public sealed class QueryDbContext(DbContextOptions<QueryDbContext> options) : DbContext(options)
 {
     public DbSet<FilterList> FilterLists => Set<FilterList>();
     public DbSet<Language> Languages => Set<Language>();
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Dependent.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Dependent.cs
index 4d3d266ed..d7af307fa 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Dependent.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Dependent.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Dependent
+public sealed record Dependent
 {
     public int DependencyFilterListId { get; init; }
     public FilterList DependencyFilterList { get; init; } = null!;
@@ -11,9 +11,9 @@ public record Dependent
     public FilterList DependentFilterList { get; init; } = null!;
 }
 
-internal class DependentTypeConfiguration : IEntityTypeConfiguration<Dependent>
+internal sealed class DependentTypeConfiguration : IEntityTypeConfiguration<Dependent>
 {
-    public virtual void Configure(EntityTypeBuilder<Dependent> builder)
+    public void Configure(EntityTypeBuilder<Dependent> builder)
     {
         builder.HasKey(d => new { d.DependencyFilterListId, d.DependentFilterListId });
         builder.HasOne(d => d.DependencyFilterList)
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterList.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterList.cs
index 98f0bcd36..cceb3c844 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterList.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterList.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record FilterList
+public sealed record FilterList
 {
     public int Id { get; init; }
     public string Name { get; init; } = null!;
@@ -32,9 +32,9 @@ public record FilterList
     public IEnumerable<Dependent> DependentFilterLists { get; init; } = new List<Dependent>();
 }
 
-internal class FilterListTypeConfiguration : IEntityTypeConfiguration<FilterList>
+internal sealed class FilterListTypeConfiguration : IEntityTypeConfiguration<FilterList>
 {
-    public virtual void Configure(EntityTypeBuilder<FilterList> builder)
+    public void Configure(EntityTypeBuilder<FilterList> builder)
     {
         builder.Property(f => f.Name)
             .HasMaxLength(256);
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListLanguage.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListLanguage.cs
index 1d2f3d932..85522e4cc 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListLanguage.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListLanguage.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record FilterListLanguage
+public sealed record FilterListLanguage
 {
     public int FilterListId { get; init; }
     public FilterList FilterList { get; init; } = null!;
@@ -11,9 +11,9 @@ public record FilterListLanguage
     public Language Language { get; init; } = null!;
 }
 
-internal class FilterListLanguageTypeConfiguration : IEntityTypeConfiguration<FilterListLanguage>
+internal sealed class FilterListLanguageTypeConfiguration : IEntityTypeConfiguration<FilterListLanguage>
 {
-    public virtual void Configure(EntityTypeBuilder<FilterListLanguage> builder)
+    public void Configure(EntityTypeBuilder<FilterListLanguage> builder)
     {
         builder.HasKey(fll => new { fll.FilterListId, fll.LanguageId });
         builder.HasDataJsonFile<FilterListLanguage>();
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListMaintainer.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListMaintainer.cs
index fee8e2634..f6dd0cc0a 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListMaintainer.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListMaintainer.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record FilterListMaintainer
+public sealed record FilterListMaintainer
 {
     public int FilterListId { get; init; }
     public FilterList FilterList { get; init; } = null!;
@@ -11,9 +11,9 @@ public record FilterListMaintainer
     public Maintainer Maintainer { get; init; } = null!;
 }
 
-internal class FilterListMaintainerTypeConfiguration : IEntityTypeConfiguration<FilterListMaintainer>
+internal sealed class FilterListMaintainerTypeConfiguration : IEntityTypeConfiguration<FilterListMaintainer>
 {
-    public virtual void Configure(EntityTypeBuilder<FilterListMaintainer> builder)
+    public void Configure(EntityTypeBuilder<FilterListMaintainer> builder)
     {
         builder.HasKey(flm => new { flm.FilterListId, flm.MaintainerId });
         builder.HasDataJsonFile<FilterListMaintainer>();
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListSyntax.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListSyntax.cs
index 75552655e..9b8bcc7e9 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListSyntax.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListSyntax.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record FilterListSyntax
+public sealed record FilterListSyntax
 {
     public int FilterListId { get; init; }
     public FilterList FilterList { get; init; } = null!;
@@ -11,9 +11,9 @@ public record FilterListSyntax
     public Syntax Syntax { get; init; } = null!;
 }
 
-internal class FilterListSyntaxTypeConfiguration : IEntityTypeConfiguration<FilterListSyntax>
+internal sealed class FilterListSyntaxTypeConfiguration : IEntityTypeConfiguration<FilterListSyntax>
 {
-    public virtual void Configure(EntityTypeBuilder<FilterListSyntax> builder)
+    public void Configure(EntityTypeBuilder<FilterListSyntax> builder)
     {
         builder.HasKey(fls => new { fls.FilterListId, fls.SyntaxId });
         builder.HasDataJsonFile<FilterListSyntax>();
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListTag.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListTag.cs
index 7771ae31a..d76c96220 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListTag.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListTag.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record FilterListTag
+public sealed record FilterListTag
 {
     public int FilterListId { get; init; }
     public FilterList FilterList { get; init; } = null!;
@@ -11,9 +11,9 @@ public record FilterListTag
     public Tag Tag { get; init; } = null!;
 }
 
-internal class FilterListTagTypeConfiguration : IEntityTypeConfiguration<FilterListTag>
+internal sealed class FilterListTagTypeConfiguration : IEntityTypeConfiguration<FilterListTag>
 {
-    public virtual void Configure(EntityTypeBuilder<FilterListTag> builder)
+    public void Configure(EntityTypeBuilder<FilterListTag> builder)
     {
         builder.HasKey(flt => new { flt.FilterListId, flt.TagId });
         builder.HasDataJsonFile<FilterListTag>();
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListViewUrl.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListViewUrl.cs
index 49d918f3f..dcaec5427 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListViewUrl.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/FilterListViewUrl.cs
@@ -1,6 +1,9 @@
-namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
+using JetBrains.Annotations;
 
-public record FilterListViewUrl
+namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
+
+[PublicAPI]
+public sealed record FilterListViewUrl
 {
     public int Id { get; init; }
     public int FilterListId { get; init; }
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Fork.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Fork.cs
index 55de65e39..58bc9dccf 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Fork.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Fork.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Fork
+public sealed record Fork
 {
     public int UpstreamFilterListId { get; init; }
     public FilterList UpstreamFilterList { get; init; } = null!;
@@ -11,9 +11,9 @@ public record Fork
     public FilterList ForkFilterList { get; init; } = null!;
 }
 
-internal class ForkTypeConfiguration : IEntityTypeConfiguration<Fork>
+internal sealed class ForkTypeConfiguration : IEntityTypeConfiguration<Fork>
 {
-    public virtual void Configure(EntityTypeBuilder<Fork> builder)
+    public void Configure(EntityTypeBuilder<Fork> builder)
     {
         builder.HasKey(f => new { f.UpstreamFilterListId, f.ForkFilterListId });
         builder.HasOne(f => f.UpstreamFilterList)
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Language.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Language.cs
index 2674f6ac5..35e362d5a 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Language.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Language.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Language
+public sealed record Language
 {
     public short Id { get; init; }
     public string Iso6391 { get; init; } = null!;
@@ -11,9 +11,9 @@ public record Language
     public IEnumerable<FilterListLanguage> FilterListLanguages { get; init; } = new List<FilterListLanguage>();
 }
 
-internal class LanguageTypeConfiguration : IEntityTypeConfiguration<Language>
+internal sealed class LanguageTypeConfiguration : IEntityTypeConfiguration<Language>
 {
-    public virtual void Configure(EntityTypeBuilder<Language> builder)
+    public void Configure(EntityTypeBuilder<Language> builder)
     {
         builder.Property(l => l.Iso6391)
             .IsFixedLength()
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/License.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/License.cs
index 36f50d2bc..26f3f6402 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/License.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/License.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record License
+public sealed record License
 {
     public int Id { get; init; }
     public string Name { get; init; } = null!;
@@ -14,9 +14,9 @@ public record License
     public IEnumerable<FilterList> FilterLists { get; init; } = new List<FilterList>();
 }
 
-internal class LicenseTypeConfiguration : IEntityTypeConfiguration<License>
+internal sealed class LicenseTypeConfiguration : IEntityTypeConfiguration<License>
 {
-    public virtual void Configure(EntityTypeBuilder<License> builder)
+    public void Configure(EntityTypeBuilder<License> builder)
     {
         builder.Property(l => l.Name)
             .HasMaxLength(64);
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Maintainer.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Maintainer.cs
index 451441e2e..9a101e6b4 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Maintainer.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Maintainer.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Maintainer
+public sealed record Maintainer
 {
     public int Id { get; init; }
     public string Name { get; init; } = null!;
@@ -13,9 +13,9 @@ public record Maintainer
     public IEnumerable<FilterListMaintainer> FilterListMaintainers { get; init; } = new List<FilterListMaintainer>();
 }
 
-internal class MaintainerTypeConfiguration : IEntityTypeConfiguration<Maintainer>
+internal sealed class MaintainerTypeConfiguration : IEntityTypeConfiguration<Maintainer>
 {
-    public virtual void Configure(EntityTypeBuilder<Maintainer> builder)
+    public void Configure(EntityTypeBuilder<Maintainer> builder)
     {
         builder.Property(m => m.Name)
             .HasMaxLength(64);
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Merge.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Merge.cs
index 9ab2510cf..bdcae439a 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Merge.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Merge.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Merge
+public sealed record Merge
 {
     public int IncludedInFilterListId { get; init; }
     public FilterList IncludedInFilterList { get; init; } = null!;
@@ -11,9 +11,9 @@ public record Merge
     public FilterList IncludesFilterList { get; init; } = null!;
 }
 
-internal class MergeTypeConfiguration : IEntityTypeConfiguration<Merge>
+internal sealed class MergeTypeConfiguration : IEntityTypeConfiguration<Merge>
 {
-    public virtual void Configure(EntityTypeBuilder<Merge> builder)
+    public void Configure(EntityTypeBuilder<Merge> builder)
     {
         builder.HasKey(m => new { m.IncludedInFilterListId, m.IncludesFilterListId });
         builder.HasOne(m => m.IncludedInFilterList)
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Software.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Software.cs
index d3a8a7714..fed29b30f 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Software.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Software.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Software
+public sealed record Software
 {
     public short Id { get; init; }
     public string Name { get; init; } = null!;
@@ -14,9 +14,9 @@ public record Software
     public IEnumerable<SoftwareSyntax> SoftwareSyntaxes { get; init; } = new List<SoftwareSyntax>();
 }
 
-internal class SoftwareTypeConfiguration : IEntityTypeConfiguration<Software>
+internal sealed class SoftwareTypeConfiguration : IEntityTypeConfiguration<Software>
 {
-    public virtual void Configure(EntityTypeBuilder<Software> builder)
+    public void Configure(EntityTypeBuilder<Software> builder)
     {
         builder.Property(s => s.Name)
             .HasMaxLength(64);
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/SoftwareSyntax.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/SoftwareSyntax.cs
index b3326153e..2c8003b83 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/SoftwareSyntax.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/SoftwareSyntax.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record SoftwareSyntax
+public sealed record SoftwareSyntax
 {
     public short SoftwareId { get; init; }
     public Software Software { get; init; } = null!;
@@ -11,9 +11,9 @@ public record SoftwareSyntax
     public Syntax Syntax { get; init; } = null!;
 }
 
-internal class SoftwareSyntaxTypeConfiguration : IEntityTypeConfiguration<SoftwareSyntax>
+internal sealed class SoftwareSyntaxTypeConfiguration : IEntityTypeConfiguration<SoftwareSyntax>
 {
-    public virtual void Configure(EntityTypeBuilder<SoftwareSyntax> builder)
+    public void Configure(EntityTypeBuilder<SoftwareSyntax> builder)
     {
         builder.HasKey(ss => new { ss.SoftwareId, ss.SyntaxId });
         builder.HasDataJsonFile<SoftwareSyntax>();
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Syntax.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Syntax.cs
index f32ecc035..a529a4a23 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Syntax.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Syntax.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Syntax
+public sealed record Syntax
 {
     public short Id { get; init; }
     public string Name { get; init; } = null!;
@@ -13,9 +13,9 @@ public record Syntax
     public IEnumerable<SoftwareSyntax> SoftwareSyntaxes { get; init; } = new List<SoftwareSyntax>();
 }
 
-internal class SyntaxTypeConfiguration : IEntityTypeConfiguration<Syntax>
+internal sealed class SyntaxTypeConfiguration : IEntityTypeConfiguration<Syntax>
 {
-    public virtual void Configure(EntityTypeBuilder<Syntax> builder)
+    public void Configure(EntityTypeBuilder<Syntax> builder)
     {
         builder.Property(s => s.Name)
             .HasMaxLength(64);
diff --git a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Tag.cs b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Tag.cs
index 25ea916bb..67caa78e2 100644
--- a/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Tag.cs
+++ b/services/Directory/FilterLists.Directory.Infrastructure/Persistence/Queries/Entities/Tag.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Directory.Infrastructure.Persistence.Queries.Entities;
 
-public record Tag
+public sealed record Tag
 {
     public int Id { get; init; }
     public string Name { get; init; } = null!;
@@ -11,9 +11,9 @@ public record Tag
     public IEnumerable<FilterListTag> FilterListTags { get; init; } = new List<FilterListTag>();
 }
 
-internal class TagTypeConfiguration : IEntityTypeConfiguration<Tag>
+internal sealed class TagTypeConfiguration : IEntityTypeConfiguration<Tag>
 {
-    public virtual void Configure(EntityTypeBuilder<Tag> builder)
+    public void Configure(EntityTypeBuilder<Tag> builder)
     {
         builder.Property(t => t.Name)
             .HasMaxLength(32);
diff --git a/services/FilterLists.AppHost/FilterLists.AppHost.csproj b/services/FilterLists.AppHost/FilterLists.AppHost.csproj
index 349aae467..df3ab2785 100644
--- a/services/FilterLists.AppHost/FilterLists.AppHost.csproj
+++ b/services/FilterLists.AppHost/FilterLists.AppHost.csproj
@@ -7,6 +7,7 @@
         <Nullable>enable</Nullable>
         <IsAspireHost>true</IsAspireHost>
         <UserSecretsId>c7967ef0-ced7-4e18-8282-7302b3c0002b</UserSecretsId>
+        <AnalysisMode>Recommended</AnalysisMode>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/services/FilterLists.ServiceDefaults/FilterLists.ServiceDefaults.csproj b/services/FilterLists.ServiceDefaults/FilterLists.ServiceDefaults.csproj
index 56cc62c0d..dac574ede 100644
--- a/services/FilterLists.ServiceDefaults/FilterLists.ServiceDefaults.csproj
+++ b/services/FilterLists.ServiceDefaults/FilterLists.ServiceDefaults.csproj
@@ -5,6 +5,7 @@
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <IsAspireSharedProject>true</IsAspireSharedProject>
+        <AnalysisMode>Recommended</AnalysisMode>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/services/FilterLists.Tests/FilterLists.Tests.csproj b/services/FilterLists.Tests/FilterLists.Tests.csproj
index 16452f28a..0c680a658 100644
--- a/services/FilterLists.Tests/FilterLists.Tests.csproj
+++ b/services/FilterLists.Tests/FilterLists.Tests.csproj
@@ -6,6 +6,7 @@
         <Nullable>enable</Nullable>
         <IsPackable>false</IsPackable>
         <IsTestProject>true</IsTestProject>
+        <AnalysisMode>Recommended</AnalysisMode>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/services/FilterLists.Tests/WebTests.cs b/services/FilterLists.Tests/WebTests.cs
index 5df6990e5..aa0e404e7 100644
--- a/services/FilterLists.Tests/WebTests.cs
+++ b/services/FilterLists.Tests/WebTests.cs
@@ -3,7 +3,7 @@
 
 namespace FilterLists.Tests;
 
-public class WebTests
+public sealed class WebTests
 {
     [Fact]
     public async Task GetWebResourceRootReturnsOkStatusCode()