diff --git a/src/modules/Elsa.Workflows.Core/Contracts/IActivityRegistry.cs b/src/modules/Elsa.Workflows.Core/Contracts/IActivityRegistry.cs
index 9b2537ac2..03ef41876 100644
--- a/src/modules/Elsa.Workflows.Core/Contracts/IActivityRegistry.cs
+++ b/src/modules/Elsa.Workflows.Core/Contracts/IActivityRegistry.cs
@@ -13,70 +13,70 @@ public interface IActivityRegistry : IActivityProvider
     /// </summary>
     /// <param name="providerType">The type of the activity provider.</param>
     /// <param name="descriptor">The activity descriptor to add.</param>
-    void Add(Type providerType, ActivityDescriptor descriptor);
-    
+    void Add(Type providerType, ActivityDescriptor descriptor);
+
     /// <summary>
     /// Removes an activity descriptor from the registry.
     /// </summary>
     /// <param name="providerType">The type of the activity provider.</param>
     /// <param name="descriptor">The activity descriptor to remove.</param>
-    void Remove(Type providerType, ActivityDescriptor descriptor);
-    
+    void Remove(Type providerType, ActivityDescriptor descriptor);
+
     /// <summary>
     /// Returns all activity descriptors in the registry.
     /// </summary>
     /// <returns>All activity descriptors in the registry.</returns>
-    IEnumerable<ActivityDescriptor> ListAll();
-    
+    IEnumerable<ActivityDescriptor> ListAll();
+
     /// <summary>
     /// Returns all activity descriptors provided by the specified provider.
     /// </summary>
     /// <param name="providerType">The type of the activity provider.</param>
     /// <returns>All activity descriptors provided by the specified provider.</returns>
-    IEnumerable<ActivityDescriptor> ListByProvider(Type providerType);
-    
+    IEnumerable<ActivityDescriptor> ListByProvider(Type providerType);
+
     /// <summary>
     /// Returns the activity descriptor for the specified activity type.
     /// </summary>
     /// <param name="type">The activity type.</param>
     /// <returns>The activity descriptor for the specified activity type.</returns>
-    ActivityDescriptor? Find(string type);
-    
+    ActivityDescriptor? Find(string type);
+
     /// <summary>
     /// Returns the activity descriptor for the specified activity type and version.
     /// </summary>
     /// <param name="type">The activity type.</param>
     /// <param name="version">The activity version.</param>
     /// <returns>The activity descriptor for the specified activity type and version.</returns>
-    ActivityDescriptor? Find(string type, int version);
-    
+    ActivityDescriptor? Find(string type, int version);
+
     /// <summary>
     /// Returns the activity descriptor matching the specified predicate.
     /// </summary>
     /// <param name="predicate">The predicate to match.</param>
     /// <returns>The activity descriptor matching the specified predicate.</returns>
-    ActivityDescriptor? Find(Func<ActivityDescriptor, bool> predicate);
-    
+    ActivityDescriptor? Find(Func<ActivityDescriptor, bool> predicate);
+
     /// <summary>
     /// Returns all activity descriptors matching the specified predicate.
     /// </summary>
     /// <param name="predicate">The predicate to match.</param>
     /// <returns>All activity descriptors matching the specified predicate.</returns>
-    IEnumerable<ActivityDescriptor> FindMany(Func<ActivityDescriptor, bool> predicate);
-    
+    IEnumerable<ActivityDescriptor> FindMany(Func<ActivityDescriptor, bool> predicate);
+
     /// <summary>
     /// Registers an activity descriptor.
     /// </summary>
     /// <param name="descriptor">The activity descriptor to register.</param>
-    void Register(ActivityDescriptor descriptor);
-    
+    void Register(ActivityDescriptor descriptor);
+
     /// <summary>
     /// Registers an activity type.
     /// </summary>
     /// <param name="activityType">The activity type to register.</param>
     /// <param name="cancellationToken">An optional cancellation token.</param>
-    Task RegisterAsync([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)] Type activityType, CancellationToken cancellationToken = default);
-    
+    Task RegisterAsync([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)] Type activityType, CancellationToken cancellationToken = default);
+
     /// <summary>
     /// Registers multiple activity types.
     /// </summary>
@@ -95,5 +95,16 @@ public interface IActivityRegistry : IActivityProvider
     /// <summary>
     /// Refreshes the activity descriptors in the registry by querying the specified activity provider.
     /// </summary>
-    Task RefreshDescriptorsAsync(IActivityProvider activityProvider, CancellationToken cancellationToken = default);
+    Task RefreshDescriptorsAsync(IActivityProvider activityProvider, CancellationToken cancellationToken = default);
+
+    /// <summary>
+    /// Clears all activity descriptors from the registry.
+    /// </summary>
+    void Clear();
+
+    /// <summary>
+    /// Clears all activity descriptors provided by the specified provider.
+    /// </summary>
+    /// <param name="providerType">The type of the activity provider.</param>
+    void ClearProvider(Type providerType);
 }
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