diff --git a/python_pkg/warsaw_districts/tests/test_warsaw_districts_anki.py b/python_pkg/warsaw_districts/tests/test_warsaw_districts_anki.py
index 9530bf6..156073b 100644
--- a/python_pkg/warsaw_districts/tests/test_warsaw_districts_anki.py
+++ b/python_pkg/warsaw_districts/tests/test_warsaw_districts_anki.py
@@ -137,9 +137,7 @@ class TestGenerateAnkiDeck:
 
         lines = result.split("\n")
         # Skip header lines and empty lines
-        data_lines = [
-            line for line in lines if line and not line.startswith("#")
-        ]
+        data_lines = [line for line in lines if line and not line.startswith("#")]
 
         # Each data line should have exactly 2 fields (front;back)
         for line in data_lines:
@@ -159,10 +157,14 @@ class TestMain:
         output_file = tmp_path / "test_output.txt"
         image_dir = tmp_path / "images"
 
-        result = main([
-            "--output", str(output_file),
-            "--image-dir", str(image_dir),
-        ])
+        result = main(
+            [
+                "--output",
+                str(output_file),
+                "--image-dir",
+                str(image_dir),
+            ]
+        )
 
         assert result == 0
         assert output_file.exists()
@@ -173,10 +175,14 @@ class TestMain:
         output_file = tmp_path / "test_output.txt"
         image_dir = tmp_path / "images"
 
-        main([
-            "--output", str(output_file),
-            "--image-dir", str(image_dir),
-        ])
+        main(
+            [
+                "--output",
+                str(output_file),
+                "--image-dir",
+                str(image_dir),
+            ]
+        )
 
         image_files = list(image_dir.glob("*.png"))
         assert len(image_files) == 18
@@ -186,11 +192,16 @@ class TestMain:
         output_file = tmp_path / "test_output.txt"
         image_dir = tmp_path / "images"
 
-        main([
-            "--output", str(output_file),
-            "--image-dir", str(image_dir),
-            "--deck-name", "Custom Deck",
-        ])
+        main(
+            [
+                "--output",
+                str(output_file),
+                "--image-dir",
+                str(image_dir),
+                "--deck-name",
+                "Custom Deck",
+            ]
+        )
 
         content = output_file.read_text()
         assert "#deck:Custom Deck" in content
diff --git a/python_pkg/warsaw_districts/warsaw_districts_anki.py b/python_pkg/warsaw_districts/warsaw_districts_anki.py
index 32a827b..af3a279 100755
--- a/python_pkg/warsaw_districts/warsaw_districts_anki.py
+++ b/python_pkg/warsaw_districts/warsaw_districts_anki.py
@@ -69,9 +69,7 @@ WARSAW_DISTRICTS: list[District] = [
 ]
 
 
-def create_district_map(
-    district: District, *, highlight_only: bool = True
-) -> Figure:
+def create_district_map(district: District, *, highlight_only: bool = True) -> Figure:
     """Create a map showing Warsaw districts with one district highlighted.
 
     Args:
diff --git a/requirements.txt b/requirements.txt
index 9799423..4cde208 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,10 +2,10 @@ beautifulsoup4>=4.0
 berserk>=0.13
 bottle>=0.12
 lxml>=5.0
-mitmproxy>=10.0
 
 # Optional dependencies for specific scripts (needed for full pylint analysis)
 matplotlib>=3.0
+mitmproxy>=10.0
 opencv-python>=4.0
 pillow>=10.0
 pygame>=2.0