diff --git a/pyproject.toml b/pyproject.toml
index 36e5052..18ac2b3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,27 +38,17 @@ Source = 'https://github.com/sinaatalay/rendercv'
 rendercv = 'rendercv.rendering:main'
 
 [project.optional-dependencies]
-docs = [
-    "mkdocs",
-    "mkdocs-material",
-    "mkdocstrings-python",
-]
-testing = [
-    "coverage",
-    "pytest",
-    "pytest-cov",
-]
-linting = [
-    "black",
-    "ruff"
-]
+docs = ["mkdocs", "mkdocs-material", "mkdocstrings-python"]
+testing = ["coverage", "pytest", "pytest-cov"]
+linting = ["black", "ruff"]
 
 [build-system]
+# Use setuptools-scm to be able to include TinyTeX in the package
 requires = ['setuptools>=68.2.2', "setuptools-scm>=8.0.4"]
 build-backend = 'setuptools.build_meta'
 
-# [tool.ruff]
-# line-length = 88
+[tool.ruff]
+line-length = 88
 
 [tool.coverage.run]
 source = ['rendercv']
diff --git a/rendercv/__main__.py b/rendercv/__main__.py
index 9f34256..6508a6f 100644
--- a/rendercv/__main__.py
+++ b/rendercv/__main__.py
@@ -31,5 +31,6 @@ def main(args=sys.argv[1:]):
     output_latex_file = render_template(data)
     run_latex(output_latex_file)
 
+
 if __name__ == "__main__":
     main(args=["tests/inputs/personal.yaml"])
diff --git a/rendercv/data_model.py b/rendercv/data_model.py
index 0fd19c7..a9cdb96 100644
--- a/rendercv/data_model.py
+++ b/rendercv/data_model.py
@@ -1236,7 +1236,7 @@ class RenderCVDataModel(BaseModel):
             design: Design = model.design
             cv: CurriculumVitae = model.cv
             section_titles = [section.title for section in cv.sections]
-            for title in design.options.show_timespan_in: # type: ignore
+            for title in design.options.show_timespan_in:  # type: ignore
                 if title not in section_titles:
                     raise ValueError(
                         f'The section "{title}" that is specified in the'