diff --git a/papis_extract/exporter.py b/papis_extract/exporter.py
index de1fe6c..8358480 100644
--- a/papis_extract/exporter.py
+++ b/papis_extract/exporter.py
@@ -24,5 +24,4 @@ class Exporter(Protocol):
 
     def run(
         self, annot_docs: list[tuple[papis.document.Document, list[Annotation]]]
-    ) -> None:
-        ...
+    ) -> None: ...
diff --git a/papis_extract/exporters/__init__.py b/papis_extract/exporters/__init__.py
index 6b5208b..b9980e5 100644
--- a/papis_extract/exporters/__init__.py
+++ b/papis_extract/exporters/__init__.py
@@ -1,4 +1,3 @@
-
 import papis.logging
 
 from papis_extract.exporter import Exporter
diff --git a/papis_extract/exporters/notes.py b/papis_extract/exporters/notes.py
index 22b4ce0..3b2726d 100644
--- a/papis_extract/exporters/notes.py
+++ b/papis_extract/exporters/notes.py
@@ -29,7 +29,9 @@ class NotesExporter:
         """
         for doc, annots in annot_docs:
             # first always true since we write single doc per note
-            formatted_annotations: list[str] = self.formatter(doc, annots, first=True).split("\n")
+            formatted_annotations: list[str] = self.formatter(
+                doc, annots, first=True
+            ).split("\n")
             if formatted_annotations:
                 self._add_annots_to_note(doc, formatted_annotations, force=self.force)
 
diff --git a/papis_extract/extraction.py b/papis_extract/extraction.py
index 79c6d6a..1c69026 100644
--- a/papis_extract/extraction.py
+++ b/papis_extract/extraction.py
@@ -14,11 +14,9 @@ logger = papis.logging.get_logger(__name__)
 
 
 class Extractor(Protocol):
-    def can_process(self, filename: Path) -> bool:
-        ...
+    def can_process(self, filename: Path) -> bool: ...
 
-    def run(self, filename: Path) -> list[Annotation]:
-        ...
+    def run(self, filename: Path) -> list[Annotation]: ...
 
 
 def start(
diff --git a/papis_extract/formatter.py b/papis_extract/formatter.py
index 18e15b2..515a2c7 100644
--- a/papis_extract/formatter.py
+++ b/papis_extract/formatter.py
@@ -3,6 +3,7 @@ from papis.document import Document
 
 from papis_extract.annotation import Annotation
 
+
 class Formatter(Protocol):
     """Basic formatter protocol.
 
@@ -16,8 +17,10 @@ class Formatter(Protocol):
     exporter is used, if multiple entries are printed.
     This can be useful for adding a header if necessary for the format.
     """
-    def __call__(self, document: Document, annotations: list[Annotation], first: bool) -> str:
-        ...
+
+    def __call__(
+        self, document: Document, annotations: list[Annotation], first: bool
+    ) -> str: ...
 
 
 def format_markdown(
diff --git a/tests/test_formatting.py b/tests/test_formatting.py
index ac7f2c3..27eb702 100644
--- a/tests/test_formatting.py
+++ b/tests/test_formatting.py
@@ -60,6 +60,7 @@ def test_csv_default():
         '"document-title","","myfile.pdf"'
     )
 
+
 def test_csv_with_header():
     fmt = format_csv
     assert fmt(document, annotations, first=True) == (