diff --git a/Sharp7.Rx/Enums/ConnectionState.cs b/Sharp7.Rx/Enums/ConnectionState.cs
index 5cbedc5..ada7634 100644
--- a/Sharp7.Rx/Enums/ConnectionState.cs
+++ b/Sharp7.Rx/Enums/ConnectionState.cs
@@ -5,5 +5,6 @@ public enum ConnectionState
     Initial,
     Connected,
     DisconnectedByUser,
-    ConnectionLost
+    ConnectionLost,
+    Disposed
 }
diff --git a/Sharp7.Rx/Sharp7Connector.cs b/Sharp7.Rx/Sharp7Connector.cs
index 951ff0c..3fca9a7 100644
--- a/Sharp7.Rx/Sharp7Connector.cs
+++ b/Sharp7.Rx/Sharp7Connector.cs
@@ -206,6 +206,7 @@ internal class Sharp7Connector : IS7Connector
                     sharp7 = null;
                 }
 
+                connectionStateSubject?.OnNext(Enums.ConnectionState.Disposed);
                 connectionStateSubject?.OnCompleted();
                 connectionStateSubject?.Dispose();
             }