diff --git a/app.py b/app.py
index 5eca872..d78c895 100644
--- a/app.py
+++ b/app.py
@@ -148,23 +148,36 @@ WEBP_SAVE_PARAMS = {
 }
 
 
-def build_fingerprint(paths):
-    h = hashlib.sha256()
-    for base in paths:
-        if not os.path.exists(base):
-            continue
-        for root, _, files in os.walk(base):
-            for f in sorted(files):
-                p = os.path.join(root, f)
-                try:
-                    with open(p, "rb") as fh:
-                        h.update(fh.read())
-                except Exception:
-                    pass
-    return h.hexdigest()[:8]
+def read_commit_and_date(filename="version.txt", root_path=None):
+    base = root_path or os.path.dirname(os.path.abspath(__file__))
+    path = os.path.join(base, filename)
+    if not os.path.exists(path):
+        return None, None
 
-APP_VERSION = f"{datetime.now():%Y.%m.%d}+{build_fingerprint(['templates','static','app.py'])}"
-app.config['APP_VERSION'] = APP_VERSION
+    try:
+        commit = open(path, "r", encoding="utf-8").read().strip()
+        if commit:
+            commit = commit[:12]
+    except Exception:
+        commit = None
+
+    try:
+        ts = os.path.getmtime(path)
+        date_str = datetime.fromtimestamp(ts).strftime("%Y.%m.%d")
+    except Exception:
+        date_str = None
+
+    return date_str, commit
+
+deploy_date, commit = read_commit_and_date("version.txt", root_path=os.path.dirname(__file__))
+if not deploy_date:
+    deploy_date = datetime.now().strftime("%Y.%m.%d")
+if not commit:
+    commit = "dev"
+
+
+APP_VERSION = f"{deploy_date}+{commit}"
+app.config["APP_VERSION"] = APP_VERSION
 
 db = SQLAlchemy(app)
 socketio = SocketIO(app, async_mode="eventlet")
diff --git a/deploy_docker.sh b/deploy_docker.sh
index 38047d3..0f33aaf 100644
--- a/deploy_docker.sh
+++ b/deploy_docker.sh
@@ -4,11 +4,11 @@ set -e
 PROFILE=$1
 
 if [[ -z "$PROFILE" ]]; then
-  echo "Uzycie: $0 {pgsql|mysql|sqlite}"
+  echo "Użycie: $0 {pgsql|mysql|sqlite}"
   exit 1
 fi
 
-echo "Zatrzymuje kontenery aplikacji i bazy..."
+echo "Zatrzymuję kontenery aplikacji i bazy..."
 if [[ "$PROFILE" == "sqlite" ]]; then
   docker compose stop
 else
@@ -18,11 +18,14 @@ fi
 echo "Pobieram najnowszy kod z repozytorium..."
 git pull
 
-echo "Buduje i uruchamiam kontenery..."
+echo "Zapisuję hash commita do version.txt..."
+git rev-parse --short HEAD > version.txt
+
+echo "Buduję i uruchamiam kontenery..."
 if [[ "$PROFILE" == "sqlite" ]]; then
   docker compose up -d --build
 else
   DB_ENGINE="$PROFILE" docker compose --profile "$PROFILE" up -d --build
 fi
 
-echo "Gotowe!"
+echo "Gotowe! Wersja aplikacji: $(cat version.txt)"