diff --git a/ClassicNotepad.c b/ClassicNotepad.c
index c5ef881..9b8b783 100644
--- a/ClassicNotepad.c
+++ b/ClassicNotepad.c
@@ -7,13 +7,12 @@
 #include <stdio.h>
 #include <wchar.h>
 #include <wctype.h>
+#include "resource.h"
 
 #ifndef swprintf_s
 int swprintf_s(wchar_t *buffer, size_t sizeOfBuffer, const wchar_t *format, ...);
 #endif
 
-#define IDI_APP 101
-
 #define IDM_FILE_NEW     1001
 #define IDM_FILE_OPEN    1002
 #define IDM_FILE_SAVE    1003
@@ -36,6 +35,8 @@ int swprintf_s(wchar_t *buffer, size_t sizeOfBuffer, const wchar_t *format, ...)
 
 #define IDM_HELP_ABOUT   4001
 
+static const WCHAR APP_VERSION[] = L"1.1.0";
+
 static HWND g_hEdit = NULL;
 static HFONT g_hFont = NULL;
 static HMENU g_hMenu = NULL;
@@ -834,7 +835,9 @@ static void ChooseFontAndApply(HWND hwnd)
 
 static void ShowAbout(HWND hwnd)
 {
-    MessageBoxW(hwnd, L"ClassicNotepad\nBuilt with Win32 API in C.\ngithub.com/acidburnmonkey/ClassicNotepad", L"About", MB_OK | MB_ICONINFORMATION);
+    WCHAR message[256];
+    swprintf_s(message, ARRAYSIZE(message), L"ClassicNotepad v%s\nBuilt with Win32 API in C.\ngithub.com/acidburnmonkey/ClassicNotepad", APP_VERSION);
+    MessageBoxW(hwnd, message, L"About", MB_OK | MB_ICONINFORMATION);
 }
 
 static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
diff --git a/ClassicNotepad.rc b/ClassicNotepad.rc
index d725649..4d2c89b 100644
--- a/ClassicNotepad.rc
+++ b/ClassicNotepad.rc
@@ -1,3 +1,4 @@
 #include <windows.h>
+#include "resource.h"
 
 IDI_APP ICON "app.ico"
diff --git a/resource.h b/resource.h
new file mode 100644
index 0000000..4137a80
--- /dev/null
+++ b/resource.h
@@ -0,0 +1,6 @@
+#ifndef CLASSICNOTEPAD_RESOURCE_H
+#define CLASSICNOTEPAD_RESOURCE_H
+
+#define IDI_APP 101
+
+#endif