diff --git a/version.py b/version.py
index ac64618..3092b3a 100644
--- a/version.py
+++ b/version.py
@@ -3,11 +3,21 @@ SPDX-FileCopyrightText: © Sebastian Thomschke and contributors
 SPDX-License-Identifier: AGPL-3.0-or-later
 SPDX-ArtifactOfProjectHomePage: https://github.com/Second-Hand-Friends/kleinanzeigen-bot/
 """
-from datetime import datetime
+import shutil
 import subprocess
+from datetime import datetime, timezone
 
 
 # used in pyproject.toml [tool.pdm.version]
 def get_version() -> str:
-    commit_hash = subprocess.check_output(['git', 'rev-parse', '--short', 'HEAD']).decode().strip()
-    return f"{datetime.now().year}+{commit_hash}"
+    git = shutil.which("git")
+    if git is None:
+        raise RuntimeError("git executable not found, unable to compute version")
+    result = subprocess.run(  # noqa: S603 running git is safe here
+        [git, "rev-parse", "--short", "HEAD"],
+        check=True,
+        capture_output=True,
+        text=True,
+    )
+    commit_hash = result.stdout.strip()
+    return f"{datetime.now(timezone.utc).year}+{commit_hash}"