diff --git a/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.Obsolete.cs b/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.Obsolete.cs
index 45c9fb00c..03860d555 100644
--- a/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.Obsolete.cs
+++ b/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.Obsolete.cs
@@ -1,4 +1,3 @@
-using Elsa.Workflows.Runtime.Deprecated;
 using Elsa.Workflows.Runtime.Entities;
 using Elsa.Workflows.Runtime.Filters;
 using Elsa.Workflows.Runtime.Matches;
diff --git a/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.cs b/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.cs
index 4b0a6056b..9ce03bf52 100644
--- a/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.cs
+++ b/src/modules/Elsa.Workflows.Runtime.Distributed/Services/DistributedWorkflowRuntime.cs
@@ -1,5 +1,4 @@
 using Elsa.Workflows.Management;
-using Elsa.Workflows.Runtime.Deprecated;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace Elsa.Workflows.Runtime.Distributed;
diff --git a/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.Obsolete.cs b/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.Obsolete.cs
index 6393c5149..9da1fe8a3 100644
--- a/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.Obsolete.cs
+++ b/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.Obsolete.cs
@@ -1,4 +1,3 @@
-using Elsa.Workflows.Runtime.Deprecated;
 using Elsa.Workflows.Runtime.Distributed;
 using Elsa.Workflows.Runtime.Entities;
 using Elsa.Workflows.Runtime.Filters;
diff --git a/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.cs b/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.cs
index 98122f13b..b66d97ee8 100644
--- a/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.cs
+++ b/src/modules/Elsa.Workflows.Runtime.ProtoActor/Services/ProtoActorWorkflowRuntime.cs
@@ -1,4 +1,3 @@
-using Elsa.Workflows.Runtime.Deprecated;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace Elsa.Workflows.Runtime.ProtoActor.Services;
diff --git a/src/modules/Elsa.Workflows.Runtime/Filters/WorkflowsFilter.cs b/src/modules/Elsa.Workflows.Runtime/Filters/WorkflowsFilter.cs
index 438446c5a..a6492d081 100644
--- a/src/modules/Elsa.Workflows.Runtime/Filters/WorkflowsFilter.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Filters/WorkflowsFilter.cs
@@ -8,4 +8,5 @@ namespace Elsa.Workflows.Runtime.Filters;
 /// <param name="ActivityTypeName">The activity type name to trigger workflows for.</param>
 /// <param name="BookmarkPayload">The bookmark payload to trigger workflows for.</param>
 /// <param name="Options">The options to use when triggering workflows.</param>
+[Obsolete("This type is obsolete. Use the new CreateClientAsync methods of IWorkflowRuntime instead.")]
 public record WorkflowsFilter(string ActivityTypeName, object BookmarkPayload, TriggerWorkflowsOptions Options);
\ No newline at end of file
diff --git a/src/modules/Elsa.Workflows.Runtime/Options/TriggerWorkflowsOptions.cs b/src/modules/Elsa.Workflows.Runtime/Options/TriggerWorkflowsOptions.cs
index 5ac0f1837..15a784823 100644
--- a/src/modules/Elsa.Workflows.Runtime/Options/TriggerWorkflowsOptions.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Options/TriggerWorkflowsOptions.cs
@@ -3,6 +3,7 @@ namespace Elsa.Workflows.Runtime.Options;
 /// <summary>
 /// Options for triggering workflows.
 /// </summary>
+[Obsolete("This type is obsolete. Use the new CreateClientAsync methods of IWorkflowRuntime instead.")]
 public class TriggerWorkflowsOptions
 {
     public string? CorrelationId { get; set; }
diff --git a/src/modules/Elsa.Workflows.Runtime/Parameters/ResumeWorkflowRuntimeParams.cs b/src/modules/Elsa.Workflows.Runtime/Parameters/ResumeWorkflowRuntimeParams.cs
index 6836fcc0b..b1b744071 100644
--- a/src/modules/Elsa.Workflows.Runtime/Parameters/ResumeWorkflowRuntimeParams.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Parameters/ResumeWorkflowRuntimeParams.cs
@@ -5,6 +5,7 @@ namespace Elsa.Workflows.Runtime.Parameters;
 /// <summary>
 /// Options for resuming workflows.
 /// </summary>
+[Obsolete("This type is obsolete. Use the new CreateClientAsync methods of IWorkflowRuntime instead.")]
 public class ResumeWorkflowRuntimeParams
 {
     public string? CorrelationId { get; set; }
diff --git a/src/modules/Elsa.Workflows.Runtime/Parameters/StartWorkflowRuntimeParams.cs b/src/modules/Elsa.Workflows.Runtime/Parameters/StartWorkflowRuntimeParams.cs
index d8e337c73..79a1dd72d 100644
--- a/src/modules/Elsa.Workflows.Runtime/Parameters/StartWorkflowRuntimeParams.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Parameters/StartWorkflowRuntimeParams.cs
@@ -5,6 +5,7 @@ namespace Elsa.Workflows.Runtime.Parameters;
 /// <summary>
 /// Represents parameters for starting a workflow.
 /// </summary>
+[Obsolete("This type is obsolete. Use the new CreateClientAsync methods of IWorkflowRuntime instead.")]
 public class StartWorkflowRuntimeParams
 {
     public string? CorrelationId { get; set; }
diff --git a/src/modules/Elsa.Workflows.Runtime/Params/WorkflowInboxMessageDeliveryParams.cs b/src/modules/Elsa.Workflows.Runtime/Params/WorkflowInboxMessageDeliveryParams.cs
index 5f800b381..b275ac64d 100644
--- a/src/modules/Elsa.Workflows.Runtime/Params/WorkflowInboxMessageDeliveryParams.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Params/WorkflowInboxMessageDeliveryParams.cs
@@ -3,6 +3,7 @@ namespace Elsa.Workflows.Runtime.Params;
 /// <summary>
 /// Options for delivering a workflow inbox message.
 /// </summary>
+[Obsolete("This type is obsolete. Use the new IBookmarkQueue service instead.")]
 public class WorkflowInboxMessageDeliveryParams
 {
     /// <summary>
diff --git a/src/modules/Elsa.Workflows.Runtime/Requests/CountRunningWorkflowsRequest.cs b/src/modules/Elsa.Workflows.Runtime/Requests/CountRunningWorkflowsRequest.cs
index 9fc36c54f..3d4cec8ac 100644
--- a/src/modules/Elsa.Workflows.Runtime/Requests/CountRunningWorkflowsRequest.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Requests/CountRunningWorkflowsRequest.cs
@@ -3,6 +3,7 @@ namespace Elsa.Workflows.Runtime.Requests;
 /// <summary>
 /// Contains arguments to use for counting the number of workflow instances.
 /// </summary>
+[Obsolete("This type is obsolete. Use the new CreateClientAsync methods of IWorkflowRuntime instead.")]
 public class CountRunningWorkflowsRequest
 {
     /// <summary>
diff --git a/src/modules/Elsa.Workflows.Runtime/Results/CancellationResult.cs b/src/modules/Elsa.Workflows.Runtime/Results/CancellationResult.cs
index 86092adb7..f40bf1a0b 100644
--- a/src/modules/Elsa.Workflows.Runtime/Results/CancellationResult.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Results/CancellationResult.cs
@@ -5,4 +5,5 @@ namespace Elsa.Workflows.Runtime.Results;
 /// </summary>
 /// <param name="Success">True if the operation was successful; otherwise, false.</param>
 /// <param name="Reason">The reason for the failure, if any.</param>
-public record CancellationResult(bool Success, CancellationFailureReason? Reason = default);
\ No newline at end of file
+[Obsolete("This type is obsolete. Use the new CreateClientAsync methods of IWorkflowRuntime instead.")]
+public record CancellationResult(bool Success, CancellationFailureReason? Reason = null);
\ No newline at end of file
diff --git a/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.Obsolete.cs b/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.Obsolete.cs
index df5be09f7..7d9cfae0c 100644
--- a/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.Obsolete.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.Obsolete.cs
@@ -1,4 +1,3 @@
-using Elsa.Workflows.Runtime.Deprecated;
 using Elsa.Workflows.Runtime.Entities;
 using Elsa.Workflows.Runtime.Filters;
 using Elsa.Workflows.Runtime.Matches;
diff --git a/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.cs b/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.cs
index 3f1414d58..b5f028fde 100644
--- a/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Services/LocalWorkflowRuntime.cs
@@ -1,4 +1,3 @@
-using Elsa.Workflows.Runtime.Deprecated;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace Elsa.Workflows.Runtime;
diff --git a/src/modules/Elsa.Workflows.Runtime/Deprecated/ObsoleteWorkflowRuntime.cs b/src/modules/Elsa.Workflows.Runtime/Services/ObsoleteWorkflowRuntime.cs
similarity index 98%
rename from src/modules/Elsa.Workflows.Runtime/Deprecated/ObsoleteWorkflowRuntime.cs
rename to src/modules/Elsa.Workflows.Runtime/Services/ObsoleteWorkflowRuntime.cs
index 28087e8bc..9eb5c5af3 100644
--- a/src/modules/Elsa.Workflows.Runtime/Deprecated/ObsoleteWorkflowRuntime.cs
+++ b/src/modules/Elsa.Workflows.Runtime/Services/ObsoleteWorkflowRuntime.cs
@@ -14,8 +14,11 @@ using Elsa.Workflows.Runtime.Results;
 using Elsa.Workflows.State;
 using Open.Linq.AsyncExtensions;
 
-namespace Elsa.Workflows.Runtime.Deprecated;
+namespace Elsa.Workflows.Runtime;
 
+/// <summary>
+/// Implements the now deprecated workflow runtime API methods. 
+/// </summary>
 public class ObsoleteWorkflowRuntime(
     Func<string?, CancellationToken, ValueTask<IWorkflowClient>> createClientAsync,
     IWorkflowDefinitionService workflowDefinitionService,