diff --git a/src/CLI.IPC.csproj b/src/CLI.IPC.csproj
index 7cda517..2328368 100644
--- a/src/CLI.IPC.csproj
+++ b/src/CLI.IPC.csproj
@@ -27,6 +27,7 @@ This project uses Semantic Versioning (https://semver.org/).
 		<PackageTags>dotnet cli command-line command-line-interface client server client-server ipc interprocess communication interprocess-communication network-programming network-communication client-server-architecture client-server-communication client-server-application</PackageTags>
 		<PackageReleaseNotes>
 			- AutoTransportSingletonApp: Use TcpLoopbackTransport if UdsTransport is not supported or the socket path is too long.
+			- Provided public ctor for SingletonAppException.
 		</PackageReleaseNotes>
 	</PropertyGroup>
 
diff --git a/src/Startup/SingletonAppException.cs b/src/Startup/SingletonAppException.cs
index 7f04f10..2500af9 100644
--- a/src/Startup/SingletonAppException.cs
+++ b/src/Startup/SingletonAppException.cs
@@ -10,7 +10,10 @@ namespace spkl.CLI.IPC.Startup;
 /// </summary>
 public class SingletonAppException : Exception
 {
-    internal SingletonAppException(string? message) : base(message)
+    /// <summary>
+    /// Initializes a new instance of this class with a specified error message.
+    /// </summary>
+    public SingletonAppException(string? message) : base(message)
     {
     }
 }