diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cab28472..71d5cf3c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -41,6 +41,10 @@ jobs:
       run: |
         ./venv/scripts/activate
         mypy theater
+      
+    - name: update build number
+      run: |
+        [IO.File]::WriteAllLines($pwd.path + "\buildnumber", $env:GITHUB_RUN_NUMBER)
 
     - name: Build binaries
       run: |
diff --git a/pyinstaller.spec b/pyinstaller.spec
index 839c641f..e545d073 100644
--- a/pyinstaller.spec
+++ b/pyinstaller.spec
@@ -11,6 +11,7 @@ analysis = Analysis(
         ('resources', 'resources'),
         ('resources/caucasus.p', 'dcs/terrain/'),
         ('resources/nevada.p', 'dcs/terrain/'),
+        ('buildnumber', './')
     ],
     hookspath=[],
     runtime_hooks=[],
diff --git a/qt_ui/uiconstants.py b/qt_ui/uiconstants.py
index fcf8ef32..734006e8 100644
--- a/qt_ui/uiconstants.py
+++ b/qt_ui/uiconstants.py
@@ -1,5 +1,6 @@
 import os
 from typing import Dict
+from pathlib import Path
 
 from PySide2.QtGui import QColor, QFont, QPixmap
 
@@ -7,6 +8,9 @@ from theater.theatergroundobject import CATEGORY_MAP
 from .liberation_theme import get_theme_icons
 
 VERSION_STRING = "2.2.0-preview"
+if Path("buildnumber").exists():
+    with open("buildnumber", "r") as file:
+        VERSION_STRING += f"-{file.readline()}"
 
 URLS : Dict[str, str] = {
     "Manual": "https://github.com/khopa/dcs_liberation/wiki",