diff --git a/Apps/FailoverApp/EmailAlert.cs b/Apps/FailoverApp/EmailAlert.cs
index 977b2e9c..b7fb3402 100644
--- a/Apps/FailoverApp/EmailAlert.cs
+++ b/Apps/FailoverApp/EmailAlert.cs
@@ -25,6 +25,7 @@ using System.Net.Mail;
 using System.Text;
 using System.Threading.Tasks;
 using TechnitiumLibrary.Net.Dns;
+using TechnitiumLibrary.Net.Dns.ResourceRecords;
 using TechnitiumLibrary.Net.Mail;
 
 namespace Failover
diff --git a/Apps/FailoverApp/HealthCheck.cs b/Apps/FailoverApp/HealthCheck.cs
index 82d53e43..91254017 100644
--- a/Apps/FailoverApp/HealthCheck.cs
+++ b/Apps/FailoverApp/HealthCheck.cs
@@ -27,6 +27,7 @@ using System.Threading.Tasks;
 using TechnitiumLibrary.IO;
 using TechnitiumLibrary.Net;
 using TechnitiumLibrary.Net.Dns;
+using TechnitiumLibrary.Net.Dns.ResourceRecords;
 using TechnitiumLibrary.Net.Proxy;
 
 namespace Failover
diff --git a/Apps/FailoverApp/HealthService.cs b/Apps/FailoverApp/HealthService.cs
index bb2ff162..adf55513 100644
--- a/Apps/FailoverApp/HealthService.cs
+++ b/Apps/FailoverApp/HealthService.cs
@@ -24,7 +24,7 @@ using System.Collections.Generic;
 using System.Net;
 using System.Threading;
 using TechnitiumLibrary.Net;
-using TechnitiumLibrary.Net.Dns;
+using TechnitiumLibrary.Net.Dns.ResourceRecords;
 
 namespace Failover
 {
diff --git a/Apps/FailoverApp/WebHook.cs b/Apps/FailoverApp/WebHook.cs
index f69dbcfc..798b7164 100644
--- a/Apps/FailoverApp/WebHook.cs
+++ b/Apps/FailoverApp/WebHook.cs
@@ -25,7 +25,7 @@ using System.Net;
 using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Threading.Tasks;
-using TechnitiumLibrary.Net.Dns;
+using TechnitiumLibrary.Net.Dns.ResourceRecords;
 using TechnitiumLibrary.Net.Proxy;
 
 namespace Failover