diff --git a/pyproject.toml b/pyproject.toml
index 14137c4..83d152d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,3 +7,10 @@ requires-python = ">=3.13"
 dependencies = [
     "pyside6>=6.9.0",
 ]
+
+[tool.ruff]
+# Extend the `pyproject.toml` file in the parent directory...
+# extend = "../pyproject.toml"
+
+# ...but use a different line length.
+line-length = 120
\ No newline at end of file
diff --git a/src/MainWindow.py b/src/MainWindow.py
index 21dd8b6..be3fef4 100644
--- a/src/MainWindow.py
+++ b/src/MainWindow.py
@@ -76,9 +76,7 @@ class MainWindow(QMainWindow):
             fullsize = QLabel()
             fullsize.setObjectName(f"fullsize_{filename}")
             fullsize.setPixmap(original_pixmap)
-            fullsize.setAlignment(
-                Qt.AlignmentFlag.AlignHCenter
-            )  # Horizontale Zentrierung
+            fullsize.setAlignment(Qt.AlignmentFlag.AlignHCenter)  # Horizontale Zentrierung
             self.ui.verticalLayout_3.addWidget(fullsize)
 
             # Beziehungen speichern
@@ -86,9 +84,7 @@ class MainWindow(QMainWindow):
             self.original_pixmaps[fullsize] = original_pixmap
 
             # Click-Event für das Thumbnail einrichten
-            thumbnail.mousePressEvent = (
-                lambda event, t=thumbnail: self.on_thumbnail_clicked(event, t)
-            )
+            thumbnail.mousePressEvent = lambda event, t=thumbnail: self.on_thumbnail_clicked(event, t)
 
     def _clear_layout(self, layout):
         """Entfernt alle Widgets aus einem Layout."""
@@ -143,9 +139,7 @@ class MainWindow(QMainWindow):
             new_width = int(original_pixmap.width() * zoom_value / 100)
 
             # Skaliere das Bild und setze es ins Label
-            scaled_pixmap = original_pixmap.scaledToWidth(
-                new_width, Qt.TransformationMode.SmoothTransformation
-            )
+            scaled_pixmap = original_pixmap.scaledToWidth(new_width, Qt.TransformationMode.SmoothTransformation)
             fullsize_label.setPixmap(scaled_pixmap)
 
             # Stelle sicher, dass die horizontale Zentrierung beibehalten wird