diff --git a/Source/ChargifyNetSample.MVC/Controllers/HomeController.cs b/Source/ChargifyNetSample.MVC/Controllers/HomeController.cs
index 75e3ad6..afee226 100644
--- a/Source/ChargifyNetSample.MVC/Controllers/HomeController.cs
+++ b/Source/ChargifyNetSample.MVC/Controllers/HomeController.cs
@@ -18,6 +18,7 @@ public ActionResult Index()
         /// POST: /home/webhook
         /// </summary>
         /// <param name="model">The webhook event payload</param>
+        /// <param name="signature_hmac_sha_256"></param>
         /// <returns>Applicable HttpStatusCode result</returns>
         [HttpPost]
         public ActionResult Webhook(WebhookEventData model, string signature_hmac_sha_256)
diff --git a/Source/ChargifyNetSample.Web/App_Code/ChargifyBase.vb b/Source/ChargifyNetSample.Web/App_Code/ChargifyBase.vb
index 5659cca..0f1c4d3 100644
--- a/Source/ChargifyNetSample.Web/App_Code/ChargifyBase.vb
+++ b/Source/ChargifyNetSample.Web/App_Code/ChargifyBase.vb
@@ -1,4 +1,5 @@
-Imports ChargifyNET
+Imports System.Net
+Imports ChargifyNET
 
 Public Class ChargifyBase
     Public Shared ReadOnly Property Chargify() As ChargifyConnect
@@ -8,6 +9,7 @@ Public Class ChargifyBase
             chargifyConnect.Password = ConfigurationManager.AppSettings("CHARGIFY_API_PASSWORD")
             chargifyConnect.URL = ConfigurationManager.AppSettings("CHARGIFY_SITE_URL")
             chargifyConnect.SharedKey = ConfigurationManager.AppSettings("CHARGIFY_SHARED_KEY")
+            chargifyConnect.ProtocolType = SecurityProtocolType.Tls12
             Return chargifyConnect
         End Get
     End Property
diff --git a/Source/ChargifyNetSample.Web/Migrations/Configuration.vb b/Source/ChargifyNetSample.Web/Migrations/Configuration.vb
index 02faa78..2596ed8 100644
--- a/Source/ChargifyNetSample.Web/Migrations/Configuration.vb
+++ b/Source/ChargifyNetSample.Web/Migrations/Configuration.vb
@@ -1,6 +1,7 @@
 Imports System
 Imports System.Data.Entity.Migrations
 Imports System.Linq
+Imports System.Net
 Imports ChargifyNET
 Imports Microsoft.AspNet.Identity
 Imports Microsoft.AspNet.Identity.EntityFramework
@@ -110,6 +111,7 @@ Namespace Migrations
                 chargifyConnect.Password = ConfigurationManager.AppSettings("CHARGIFY_API_PASSWORD")
                 chargifyConnect.URL = ConfigurationManager.AppSettings("CHARGIFY_SITE_URL")
                 chargifyConnect.SharedKey = ConfigurationManager.AppSettings("CHARGIFY_SHARED_KEY")
+                chargifyConnect.ProtocolType = SecurityProtocolType.Tls12
                 Return chargifyConnect
             End Get
         End Property