diff --git a/map_machine/feature/building.py b/map_machine/feature/building.py
index 092c8e7..1fb1030 100644
--- a/map_machine/feature/building.py
+++ b/map_machine/feature/building.py
@@ -1,12 +1,13 @@
 """
 Buildings on the map.
 """
+from typing import Any, Optional
+
 import numpy as np
 from colour import Color
 from svgwrite import Drawing
 from svgwrite.container import Group
 from svgwrite.path import Path
-from typing import Any, Optional
 
 from map_machine.drawing import PathCommands
 from map_machine.feature.direction import Segment
diff --git a/map_machine/feature/direction.py b/map_machine/feature/direction.py
index b45a439..534b296 100644
--- a/map_machine/feature/direction.py
+++ b/map_machine/feature/direction.py
@@ -1,14 +1,14 @@
 """
 Direction tag support.
 """
-from colour import Color
-from svgwrite import Drawing
-from svgwrite.gradients import RadialGradient
-from svgwrite.path import Path
 from typing import Iterator, Optional
 
 import numpy as np
+from colour import Color
 from portolan import middle
+from svgwrite import Drawing
+from svgwrite.gradients import RadialGradient
+from svgwrite.path import Path
 
 from map_machine.drawing import PathCommands
 from map_machine.osm.osm_reader import Tagged
diff --git a/map_machine/map_configuration.py b/map_machine/map_configuration.py
index 98715ce..d9ae10c 100644
--- a/map_machine/map_configuration.py
+++ b/map_machine/map_configuration.py
@@ -2,12 +2,12 @@
 Map drawing configuration.
 """
 import argparse
-from colour import Color
 from dataclasses import dataclass
 from enum import Enum
-
 from typing import Optional
 
+from colour import Color
+
 __author__ = "Sergey Vartanov"
 __email__ = "me@enzet.ru"