diff --git a/src/core/Elsa.Abstractions/ActivityProviders/IActivityProvider.cs b/src/core/Elsa.Abstractions/Services/IActivityProvider.cs
similarity index 83%
rename from src/core/Elsa.Abstractions/ActivityProviders/IActivityProvider.cs
rename to src/core/Elsa.Abstractions/Services/IActivityProvider.cs
index 7cb85fe1f..efe9378dc 100644
--- a/src/core/Elsa.Abstractions/ActivityProviders/IActivityProvider.cs
+++ b/src/core/Elsa.Abstractions/Services/IActivityProvider.cs
@@ -1,8 +1,9 @@
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
+using Elsa.Services.Models;
 
-namespace Elsa.ActivityProviders
+namespace Elsa.Services
 {
     public interface IActivityTypeProvider
     {
diff --git a/src/core/Elsa.Abstractions/ActivityProviders/IActivityTypeService.cs b/src/core/Elsa.Abstractions/Services/IActivityTypeService.cs
similarity index 95%
rename from src/core/Elsa.Abstractions/ActivityProviders/IActivityTypeService.cs
rename to src/core/Elsa.Abstractions/Services/IActivityTypeService.cs
index 7708e7a9b..24e6917a8 100644
--- a/src/core/Elsa.Abstractions/ActivityProviders/IActivityTypeService.cs
+++ b/src/core/Elsa.Abstractions/Services/IActivityTypeService.cs
@@ -4,7 +4,7 @@ using System.Threading.Tasks;
 using Elsa.Metadata;
 using Elsa.Services.Models;
 
-namespace Elsa.ActivityProviders
+namespace Elsa.Services
 {
     public interface IActivityTypeService
     {
diff --git a/src/core/Elsa.Abstractions/ActivityProviders/ActivityType.cs b/src/core/Elsa.Abstractions/Services/Models/ActivityType.cs
similarity index 96%
rename from src/core/Elsa.Abstractions/ActivityProviders/ActivityType.cs
rename to src/core/Elsa.Abstractions/Services/Models/ActivityType.cs
index 8ecc1abb7..58a8c6c43 100644
--- a/src/core/Elsa.Abstractions/ActivityProviders/ActivityType.cs
+++ b/src/core/Elsa.Abstractions/Services/Models/ActivityType.cs
@@ -3,10 +3,8 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using Elsa.ActivityResults;
 using Elsa.Metadata;
-using Elsa.Services;
-using Elsa.Services.Models;
 
-namespace Elsa.ActivityProviders
+namespace Elsa.Services.Models
 {
     public class ActivityType
     {
diff --git a/src/core/Elsa.Abstractions/ActivityProviders/RuntimeActivityInstance.cs b/src/core/Elsa.Abstractions/Services/Models/RuntimeActivityInstance.cs
similarity index 97%
rename from src/core/Elsa.Abstractions/ActivityProviders/RuntimeActivityInstance.cs
rename to src/core/Elsa.Abstractions/Services/Models/RuntimeActivityInstance.cs
index 76daed4e4..a92e51fb9 100644
--- a/src/core/Elsa.Abstractions/ActivityProviders/RuntimeActivityInstance.cs
+++ b/src/core/Elsa.Abstractions/Services/Models/RuntimeActivityInstance.cs
@@ -1,4 +1,4 @@
-namespace Elsa.ActivityProviders
+namespace Elsa.Services.Models
 {
     public class RuntimeActivityInstance
     {