diff --git a/RechatTool/Extensions.cs b/RechatTool/Extensions.cs
index dd6ce08..85ab449 100644
--- a/RechatTool/Extensions.cs
+++ b/RechatTool/Extensions.cs
@@ -14,5 +14,9 @@ public static string NullIfEmpty(this string s) {
 		public static long? TryParseInt64(this string s) {
 			return Int64.TryParse(s, out long n) ? n : (long?)null;
 		}
+
+		public static string ToDisplayString(this Version v) {
+			return $"{v.Major}.{v.Minor}.{v.Revision}";
+		}
 	}
 }
diff --git a/RechatTool/Program.cs b/RechatTool/Program.cs
index 311869f..d7052a3 100644
--- a/RechatTool/Program.cs
+++ b/RechatTool/Program.cs
@@ -9,6 +9,8 @@
 
 namespace RechatTool {
 	internal class Program {
+		public const string Version = "1.1.0.0";
+
 		private static int Main(string[] args) {
 			int iArg = 0;
 			string GetArg(bool optional = false) =>
@@ -50,6 +52,8 @@ void UpdateProgress(int downloaded, int total) {
 				return 0;
 			}
 			catch (InvalidArgumentException) {
+				Console.WriteLine($"RechatTool v{new Version(Version).ToDisplayString()}");
+				Console.WriteLine();
 				Console.WriteLine("Modes:");
 				Console.WriteLine("   -d videoid [path]");
 				Console.WriteLine("      Downloads chat replay for the specified videoid. If path is not");
diff --git a/RechatTool/Properties/AssemblyInfo.cs b/RechatTool/Properties/AssemblyInfo.cs
index bad9db1..4ccac67 100644
--- a/RechatTool/Properties/AssemblyInfo.cs
+++ b/RechatTool/Properties/AssemblyInfo.cs
@@ -1,5 +1,6 @@
 using System.Reflection;
 using System.Runtime.InteropServices;
+using RechatTool;
 
 // General Information about an assembly is controlled through the following
 // set of attributes. Change these attribute values to modify the information
@@ -31,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion(Program.Version)]
+[assembly: AssemblyFileVersion(Program.Version)]