diff --git a/src/Leanetec.EConnect.Client/Alive/GetExtensions.cs b/src/Leanetec.EConnect.Client/Alive/GetExtensions.cs
index f1e688d..6b00e09 100644
--- a/src/Leanetec.EConnect.Client/Alive/GetExtensions.cs
+++ b/src/Leanetec.EConnect.Client/Alive/GetExtensions.cs
@@ -11,7 +11,7 @@ public static class GetExtensions
     /// <param name="role">Optional role of the logged-in user.</param>
     /// <param name="apiVersion">Optional API version.</param>
     /// <returns>A <see cref="Task{Boolean}"/> representing whether the application is alive.</returns>
-    public static Task<bool> IsAliveAsync(this IMediator mediator, Role? role = null, int? apiVersion = null) =>
+    public static Task<bool> IsAliveAsync(this IMediator mediator, Role? role = null, int apiVersion = 1) =>
         mediator.Send(new GetRequest(role)
         {
             ApiVersion = apiVersion
@@ -24,7 +24,7 @@ public static class GetExtensions
     /// <param name="role">Optional role of the logged-in user.</param>
     /// <param name="apiVersion">Optional API version.</param>
     /// <returns>True if the application is alive; otherwise, false.</returns>
-    public static bool IsAlive(this IMediator mediator, Role? role = null, int? apiVersion = null) =>
+    public static bool IsAlive(this IMediator mediator, Role? role = null, int apiVersion = 1) =>
         mediator.Send(new GetRequest(role)
         {
             ApiVersion = apiVersion