diff --git a/Elfo.Wardein.Abstractions/Watchers/IAmWatcherPersistenceService.cs b/Elfo.Wardein.Abstractions/Watchers/IAmWatcherPersistenceService.cs
index d152a3b..0186190 100644
--- a/Elfo.Wardein.Abstractions/Watchers/IAmWatcherPersistenceService.cs
+++ b/Elfo.Wardein.Abstractions/Watchers/IAmWatcherPersistenceService.cs
@@ -7,6 +7,6 @@ namespace Elfo.Firmenich.Wardein.Abstractions.Watchers
 {
     public interface IAmWatcherPersistenceService
     {
-        Task<WatcherStatusResult> UpsertCurrentStatus(int watcherConfigurationId, int applicationId, int applicationHostname, bool isHealthy, Exception failureException = null);
+        Task<WatcherStatusResult> UpsertCurrentStatus(int watcherConfigurationId, int applicationId, string applicationHostname, bool isHealthy, Exception failureException = null);
     }
 }
diff --git a/Elfo.Wardein.Core/Persistence/OracleWatcherPersistenceService.cs b/Elfo.Wardein.Core/Persistence/OracleWatcherPersistenceService.cs
index 8693bd3..12e76eb 100644
--- a/Elfo.Wardein.Core/Persistence/OracleWatcherPersistenceService.cs
+++ b/Elfo.Wardein.Core/Persistence/OracleWatcherPersistenceService.cs
@@ -16,7 +16,7 @@ public OracleWatcherPersistenceService(OracleConnectionConfiguration oracleConne
             this.oracleConnectionConfiguration = oracleConnectionConfiguration;
         }
 
-        public Task<WatcherStatusResult> UpsertCurrentStatus(int watcherConfigurationId, int applicationId, int applicationHostname, bool isHealthy, Exception failureException = null)
+        public Task<WatcherStatusResult> UpsertCurrentStatus(int watcherConfigurationId, int applicationId, string applicationHostname, bool isHealthy, Exception failureException = null)
         {
             throw new NotImplementedException();
         }