diff --git a/src/activities/Elsa.Activities.Http/Activities/HttpEndpoint/HttpEndpoint.cs b/src/activities/Elsa.Activities.Http/Activities/HttpEndpoint/HttpEndpoint.cs
index 533e3c124..7eb9f42bb 100644
--- a/src/activities/Elsa.Activities.Http/Activities/HttpEndpoint/HttpEndpoint.cs
+++ b/src/activities/Elsa.Activities.Http/Activities/HttpEndpoint/HttpEndpoint.cs
@@ -1,10 +1,6 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Threading;
-using System.Threading.Tasks;
 using Elsa.Activities.Http.Models;
-using Elsa.Activities.Http.Services;
 using Elsa.ActivityResults;
 using Elsa.Attributes;
 using Elsa.Design;
diff --git a/src/activities/Elsa.Activities.Http/Activities/WriteHttpResponse/WriteHttpResponse.cs b/src/activities/Elsa.Activities.Http/Activities/WriteHttpResponse/WriteHttpResponse.cs
index 394ca272e..9a307e271 100644
--- a/src/activities/Elsa.Activities.Http/Activities/WriteHttpResponse/WriteHttpResponse.cs
+++ b/src/activities/Elsa.Activities.Http/Activities/WriteHttpResponse/WriteHttpResponse.cs
@@ -8,7 +8,6 @@ using Elsa.Expressions;
 using Elsa.Services;
 using Elsa.Services.Models;
 using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Http.Features;
 using Microsoft.Extensions.Localization;
 
 // ReSharper disable once CheckNamespace
diff --git a/src/activities/Elsa.Activities.Http/Endpoints/Signals/DispatchEndpoint.cs b/src/activities/Elsa.Activities.Http/Endpoints/Signals/DispatchEndpoint.cs
index 35195a271..f67394460 100644
--- a/src/activities/Elsa.Activities.Http/Endpoints/Signals/DispatchEndpoint.cs
+++ b/src/activities/Elsa.Activities.Http/Endpoints/Signals/DispatchEndpoint.cs
@@ -1,4 +1,3 @@
-using System.Threading;
 using System.Threading.Tasks;
 using Elsa.Activities.Signaling.Services;
 using Microsoft.AspNetCore.Mvc;
@@ -19,9 +18,9 @@ namespace Elsa.Activities.Http.Endpoints.Signals
         }
 
         [HttpGet, HttpPost]
-        public async Task<IActionResult> Handle(string token, CancellationToken cancellationToken)
+        public async Task<IActionResult> Handle(string token)
         {
-            var pendingWorkflows = await _signaler.DispatchSignalTokenAsync(token, cancellationToken: cancellationToken).ToList();
+            var pendingWorkflows = await _signaler.DispatchSignalTokenAsync(token).ToList();
             return Accepted(pendingWorkflows);
         }
     }
diff --git a/src/activities/Elsa.Activities.Http/Endpoints/Signals/TriggerEndpoint.cs b/src/activities/Elsa.Activities.Http/Endpoints/Signals/TriggerEndpoint.cs
index a24bd7dc9..3f347fd63 100644
--- a/src/activities/Elsa.Activities.Http/Endpoints/Signals/TriggerEndpoint.cs
+++ b/src/activities/Elsa.Activities.Http/Endpoints/Signals/TriggerEndpoint.cs
@@ -1,4 +1,3 @@
-using System.Threading;
 using System.Threading.Tasks;
 using Elsa.Activities.Signaling.Services;
 using Microsoft.AspNetCore.Mvc;
@@ -15,9 +14,9 @@ namespace Elsa.Activities.Http.Endpoints.Signals
         public TriggerEndpoint(ISignaler signaler) => _signaler = signaler;
 
         [HttpGet, HttpPost]
-        public async Task<IActionResult> Handle(string token, CancellationToken cancellationToken)
+        public async Task<IActionResult> Handle(string token)
         {
-            var result = await _signaler.TriggerSignalTokenAsync(token, cancellationToken: cancellationToken).ToList();
+            var result = await _signaler.TriggerSignalTokenAsync(token).ToList();
 
             return HttpContext.Response.HasStarted
                 ? new EmptyResult()
diff --git a/src/activities/Elsa.Activities.Http/Extensions/ServiceCollectionExtensions.cs b/src/activities/Elsa.Activities.Http/Extensions/ServiceCollectionExtensions.cs
index 6d3a47ade..03eed0545 100644
--- a/src/activities/Elsa.Activities.Http/Extensions/ServiceCollectionExtensions.cs
+++ b/src/activities/Elsa.Activities.Http/Extensions/ServiceCollectionExtensions.cs
@@ -8,7 +8,6 @@ using Elsa.Activities.Http.Options;
 using Elsa.Activities.Http.Parsers;
 using Elsa.Activities.Http.Services;
 using Elsa.Scripting.Liquid.Extensions;
-using Elsa.Services;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc.Infrastructure;
 using Microsoft.Extensions.DependencyInjection.Extensions;