diff --git a/pyproject.toml b/pyproject.toml
index 4210171..d772196 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dynamic = ["readme", "version"]
 
 [project.optional-dependencies]
 coverage = ["coverage==7.13.4"]
-formatting = ["black==25.12.0", "isort==8.0.1"]
+formatting = ["black==26.3.0", "isort==8.0.1"]
 linting = ["pylint==4.0.5"]
 spellcheck = ["codespell==2.4.2"]
 test_packaging = ["build==1.4.0", "twine==6.2.0"]
diff --git a/src/ebd_toolchain/main.py b/src/ebd_toolchain/main.py
index d4215a5..69f5e01 100644
--- a/src/ebd_toolchain/main.py
+++ b/src/ebd_toolchain/main.py
@@ -130,7 +130,7 @@ def main(input_path: Path, output_path: Path, export_types: list[Literal["puml",
 # pylint:disable=too-many-locals, too-many-branches, too-many-statements,
 def _main(input_path: Path, output_path: Path, export_types: list[Literal["puml", "dot", "json", "svg"]]) -> None:
     """same as main but without the click decorators"""
-    settings = Settings()  # type:ignore[call-arg]
+    settings = Settings()  # type: ignore[call-arg]
     # read settings from environment variable/.env file
     kroki_client = Kroki(kroki_host=f"http://{settings.kroki_host}:{settings.kroki_port}")
     if output_path.exists() and output_path.is_dir():
@@ -170,7 +170,7 @@ def handle_known_error(error: Exception, ebd_key: str, category: ErrorCategory)
                 ebd_meta_data = EbdTableMetaData(
                     ebd_code=ebd_key,
                     ebd_name=ebd_kapitel.subsection_title,
-                    chapter=ebd_kapitel.chapter_title,  # type:ignore[arg-type]
+                    chapter=ebd_kapitel.chapter_title,  # type: ignore[arg-type]
                     # pylint:disable=line-too-long
                     section=f"{ebd_kapitel.chapter}.{ebd_kapitel.section}.{ebd_kapitel.subsection}: {ebd_kapitel.section_title}",
                     role="N/A",
@@ -183,7 +183,7 @@ def handle_known_error(error: Exception, ebd_key: str, category: ErrorCategory)
                     docx_tables,
                     ebd_key=ebd_key,
                     ebd_name=ebd_kapitel.subsection_title,
-                    chapter=ebd_kapitel.chapter_title,  # type:ignore[arg-type]
+                    chapter=ebd_kapitel.chapter_title,  # type: ignore[arg-type]
                     # pylint:disable=line-too-long
                     section=f"{ebd_kapitel.chapter}.{ebd_kapitel.section}.{ebd_kapitel.subsection}: {ebd_kapitel.section_title}",
                 )