diff --git a/src/Conventions.Abstractions/ConventionHostBuilderExtensions.cs b/src/Conventions.Abstractions/ConventionHostBuilderExtensions.cs
index c348f5ddf..3fe626cc4 100644
--- a/src/Conventions.Abstractions/ConventionHostBuilderExtensions.cs
+++ b/src/Conventions.Abstractions/ConventionHostBuilderExtensions.cs
@@ -23,6 +23,7 @@ public static class ConventionHostBuilderExtensions
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder SetupConvention(
         this ConventionContextBuilder container,
@@ -43,6 +44,7 @@ public static ConventionContextBuilder SetupConvention(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder SetupConvention(
         this ConventionContextBuilder container,
@@ -121,6 +123,7 @@ Func<IConventionContext, IServiceCollection, ValueTask<IServiceProviderFactory<T
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -131,7 +134,7 @@ public static ConventionContextBuilder ConfigureServices(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(@delegate, priority, category);
+        container.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -141,6 +144,7 @@ public static ConventionContextBuilder ConfigureServices(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -151,7 +155,7 @@ public static ConventionContextBuilder ConfigureServices(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(@delegate, priority, category);
+        container.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -161,6 +165,7 @@ public static ConventionContextBuilder ConfigureServices(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -171,7 +176,7 @@ public static ConventionContextBuilder ConfigureServices(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ServiceConvention((_, configuration, services) => @delegate(configuration, services)), priority, category);
+        container.AppendDelegate(new ServiceConvention((_, configuration, services) => @delegate(configuration, services)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -181,6 +186,7 @@ public static ConventionContextBuilder ConfigureServices(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -193,7 +199,7 @@ public static ConventionContextBuilder ConfigureServices(
         container.AppendDelegate(
             new ServiceAsyncConvention((_, configuration, services, cancellationToken) => @delegate(configuration, services, cancellationToken)),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return container;
     }
@@ -204,6 +210,7 @@ public static ConventionContextBuilder ConfigureServices(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -214,7 +221,7 @@ public static ConventionContextBuilder ConfigureServices(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ServiceAsyncConvention((_, configuration, services, _) => @delegate(configuration, services)), priority, category);
+        container.AppendDelegate(new ServiceAsyncConvention((_, configuration, services, _) => @delegate(configuration, services)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -224,6 +231,7 @@ public static ConventionContextBuilder ConfigureServices(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -234,7 +242,7 @@ public static ConventionContextBuilder ConfigureServices(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ServiceConvention((_, _, services) => @delegate(services)), priority, category);
+        container.AppendDelegate(new ServiceConvention((_, _, services) => @delegate(services)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -244,6 +252,7 @@ public static ConventionContextBuilder ConfigureServices(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -254,7 +263,7 @@ public static ConventionContextBuilder ConfigureServices(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ServiceAsyncConvention((_, _, services, _) => @delegate(services)), priority, category);
+        container.AppendDelegate(new ServiceAsyncConvention((_, _, services, _) => @delegate(services)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -264,6 +273,7 @@ public static ConventionContextBuilder ConfigureServices(
     /// <param name="container">The container.</param>
     /// <param name="delegate">The delegate.</param>
     /// <param name="priority">The priority.</param>
+    /// <param name="category">The category.</param>
     /// <returns><see cref="ConventionContextBuilder" />.</returns>
     public static ConventionContextBuilder ConfigureServices(
         this ConventionContextBuilder container,
@@ -274,7 +284,7 @@ public static ConventionContextBuilder ConfigureServices(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ServiceAsyncConvention((_, _, services, cancellationToken) => @delegate(services, cancellationToken)), priority, category);
+        container.AppendDelegate(new ServiceAsyncConvention((_, _, services, cancellationToken) => @delegate(services, cancellationToken)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -295,7 +305,7 @@ public static ConventionContextBuilder ConfigureLogging(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(@delegate, priority, category);
+        container.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -316,7 +326,7 @@ public static ConventionContextBuilder ConfigureLogging(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(@delegate, priority, category);
+        container.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -337,7 +347,7 @@ public static ConventionContextBuilder ConfigureLogging(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new LoggingConvention((_, configuration, builder) => @delegate(configuration, builder)), priority, category);
+        container.AppendDelegate(new LoggingConvention((_, configuration, builder) => @delegate(configuration, builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -361,7 +371,7 @@ public static ConventionContextBuilder ConfigureLogging(
         container.AppendDelegate(
             new LoggingAsyncConvention((_, configuration, builder, cancellationToken) => @delegate(configuration, builder, cancellationToken)),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return container;
     }
@@ -383,7 +393,7 @@ public static ConventionContextBuilder ConfigureLogging(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new LoggingAsyncConvention((_, configuration, builder, _) => @delegate(configuration, builder)), priority, category);
+        container.AppendDelegate(new LoggingAsyncConvention((_, configuration, builder, _) => @delegate(configuration, builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -404,7 +414,7 @@ public static ConventionContextBuilder ConfigureLogging(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new LoggingConvention((_, _, builder) => @delegate(builder)), priority, category);
+        container.AppendDelegate(new LoggingConvention((_, _, builder) => @delegate(builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -425,7 +435,7 @@ public static ConventionContextBuilder ConfigureLogging(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new LoggingAsyncConvention((_, _, builder, cancellationToken) => @delegate(builder, cancellationToken)), priority, category);
+        container.AppendDelegate(new LoggingAsyncConvention((_, _, builder, cancellationToken) => @delegate(builder, cancellationToken)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -446,7 +456,7 @@ public static ConventionContextBuilder ConfigureLogging(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new LoggingAsyncConvention((_, _, builder, _) => @delegate(builder)), priority, category);
+        container.AppendDelegate(new LoggingAsyncConvention((_, _, builder, _) => @delegate(builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -467,7 +477,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(@delegate, priority, category);
+        container.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -488,7 +498,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(@delegate, priority, category);
+        container.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -509,7 +519,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ConfigurationConvention((_, configuration, builder) => @delegate(configuration, builder)), priority, category);
+        container.AppendDelegate(new ConfigurationConvention((_, configuration, builder) => @delegate(configuration, builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -533,7 +543,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
         container.AppendDelegate(
             new ConfigurationAsyncConvention((_, configuration, builder, cancellationToken) => @delegate(configuration, builder, cancellationToken)),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return container;
     }
@@ -555,7 +565,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ConfigurationAsyncConvention((_, configuration, builder, _) => @delegate(configuration, builder)), priority, category);
+        container.AppendDelegate(new ConfigurationAsyncConvention((_, configuration, builder, _) => @delegate(configuration, builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -576,7 +586,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ConfigurationConvention((_, _, builder) => @delegate(builder)), priority, category);
+        container.AppendDelegate(new ConfigurationConvention((_, _, builder) => @delegate(builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
@@ -600,7 +610,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
         container.AppendDelegate(
             new ConfigurationAsyncConvention((_, _, builder, cancellationToken) => @delegate(builder, cancellationToken)),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return container;
     }
@@ -622,7 +632,7 @@ public static ConventionContextBuilder ConfigureConfiguration(
     {
         ArgumentNullException.ThrowIfNull(container);
 
-        container.AppendDelegate(new ConfigurationAsyncConvention((_, _, builder, _) => @delegate(builder)), priority, category);
+        container.AppendDelegate(new ConfigurationAsyncConvention((_, _, builder, _) => @delegate(builder)), priority, category ?? ConventionCategory.Core);
         return container;
     }
 
diff --git a/src/Conventions.Autofac/AutofacExtensions.cs b/src/Conventions.Autofac/AutofacExtensions.cs
index 0f28a389f..98598d177 100644
--- a/src/Conventions.Autofac/AutofacExtensions.cs
+++ b/src/Conventions.Autofac/AutofacExtensions.cs
@@ -26,7 +26,7 @@ public static async ValueTask<ContainerBuilder> ApplyConventionsAsync(
     )
     {
         var configuration = context.Get<IConfiguration>() ?? throw new ArgumentException("Configuration was not found in context");
-        foreach (var item in context.Conventions.Get<IAutofacConvention, AutofacConvention>())
+        foreach (var item in context.Conventions.Get<IAutofacConvention, AutofacConvention, IAutofacAsyncConvention, AutofacAsyncConvention>())
         {
             switch (item)
             {
@@ -47,4 +47,4 @@ public static async ValueTask<ContainerBuilder> ApplyConventionsAsync(
 
         return containerBuilder;
     }
-}
\ No newline at end of file
+}
diff --git a/src/Conventions.Autofac/AutofacRocketHostExtensions.cs b/src/Conventions.Autofac/AutofacRocketHostExtensions.cs
index c72a9c946..24c591f5a 100644
--- a/src/Conventions.Autofac/AutofacRocketHostExtensions.cs
+++ b/src/Conventions.Autofac/AutofacRocketHostExtensions.cs
@@ -47,7 +47,7 @@ public static ConventionContextBuilder ConfigureAutofac(
     {
         ArgumentNullException.ThrowIfNull(builder);
 
-        builder.AppendDelegate(@delegate, priority, category);
+        builder.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return builder;
     }
 
@@ -71,7 +71,7 @@ public static ConventionContextBuilder ConfigureAutofac(
         builder.AppendDelegate(
             new AutofacConvention((_, configuration, services, container) => @delegate(configuration, services, container)),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return builder;
     }
@@ -93,7 +93,7 @@ public static ConventionContextBuilder ConfigureAutofac(
     {
         ArgumentNullException.ThrowIfNull(builder);
 
-        builder.AppendDelegate(new AutofacConvention((_, _, services, container) => @delegate(services, container)), priority, category);
+        builder.AppendDelegate(new AutofacConvention((_, _, services, container) => @delegate(services, container)), priority, category ?? ConventionCategory.Core);
         return builder;
     }
 
@@ -114,7 +114,7 @@ public static ConventionContextBuilder ConfigureAutofac(
     {
         ArgumentNullException.ThrowIfNull(builder);
 
-        builder.AppendDelegate(new AutofacConvention((_, _, _, container) => @delegate(container)), priority, category);
+        builder.AppendDelegate(new AutofacConvention((_, _, _, container) => @delegate(container)), priority, category ?? ConventionCategory.Core);
         return builder;
     }
 }
diff --git a/src/Conventions.DryIoc/DryIocExtensions.cs b/src/Conventions.DryIoc/DryIocExtensions.cs
index 153e864cc..263ac8a1f 100644
--- a/src/Conventions.DryIoc/DryIocExtensions.cs
+++ b/src/Conventions.DryIoc/DryIocExtensions.cs
@@ -27,7 +27,7 @@ public static async ValueTask<IContainer> ApplyConventionsAsync(
     )
     {
         var configuration = context.Get<IConfiguration>() ?? throw new ArgumentException("Configuration was not found in context");
-        foreach (var item in context.Conventions.Get<IDryIocConvention, DryIocConvention>())
+        foreach (var item in context.Conventions.Get<IDryIocConvention, DryIocConvention, IDryIocAsyncConvention, DryIocAsyncConvention>())
         {
             container = item switch
                         {
@@ -47,4 +47,4 @@ public static async ValueTask<IContainer> ApplyConventionsAsync(
 
         return container;
     }
-}
\ No newline at end of file
+}
diff --git a/src/Conventions.DryIoc/DryIocRocketHostExtensions.cs b/src/Conventions.DryIoc/DryIocRocketHostExtensions.cs
index 3d691705d..7c75b0e04 100644
--- a/src/Conventions.DryIoc/DryIocRocketHostExtensions.cs
+++ b/src/Conventions.DryIoc/DryIocRocketHostExtensions.cs
@@ -46,7 +46,7 @@ public static ConventionContextBuilder ConfigureDryIoc(
     {
         ArgumentNullException.ThrowIfNull(builder);
 
-        builder.AppendDelegate(@delegate, priority, category);
+        builder.AppendDelegate(@delegate, priority, category ?? ConventionCategory.Core);
         return builder;
     }
 
@@ -76,7 +76,7 @@ public static ConventionContextBuilder ConfigureDryIoc(
                 }
             ),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return builder;
     }
@@ -128,7 +128,7 @@ public static ConventionContextBuilder ConfigureDryIoc(
                 }
             ),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return builder;
     }
@@ -153,7 +153,7 @@ public static ConventionContextBuilder ConfigureDryIoc(
         builder.AppendDelegate(
             new DryIocConvention((_, configuration, services, container) => @delegate(configuration, services, container)),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return builder;
     }
@@ -184,7 +184,7 @@ public static ConventionContextBuilder ConfigureDryIoc(
                 }
             ),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return builder;
     }
@@ -206,7 +206,7 @@ public static ConventionContextBuilder ConfigureDryIoc(
     {
         ArgumentNullException.ThrowIfNull(builder);
 
-        builder.AppendDelegate(new DryIocConvention((_, _, _, container) => @delegate(container)), priority, category);
+        builder.AppendDelegate(new DryIocConvention((_, _, _, container) => @delegate(container)), priority, category ?? ConventionCategory.Core);
         return builder;
     }
 
@@ -236,7 +236,7 @@ public static ConventionContextBuilder ConfigureDryIoc(
                 }
             ),
             priority,
-            category
+            category ?? ConventionCategory.Core
         );
         return builder;
     }