diff --git a/Makefile b/Makefile
index 2ccbfc6..dd8a14e 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,8 @@ all: $(STL_FILES) lint
 
 lint: .lint
 
-.lint: **.py
+.lint: *.py components/*.py
 	flake8 
+	black *.py */*.py
 	touch .lint
 
diff --git a/base.py b/base.py
index b5936b2..29e5184 100644
--- a/base.py
+++ b/base.py
@@ -1,4 +1,5 @@
 import cadquery as cq
+
 # from cq_warehouse.drafting import Draft
 
 import components.audio_plug as audio_plug
diff --git a/components/keyboard.py b/components/keyboard.py
index 9e7dcfa..fc3c386 100644
--- a/components/keyboard.py
+++ b/components/keyboard.py
@@ -25,7 +25,9 @@ def init():
             "x": 0,
             "y": 0,
             "z": kbd_pillar_offset_1,
-            "shape": cq.Sketch().push(kbd_pillar_positions).circle(kbd_pillar_radius_1, mode="a"),
+            "shape": cq.Sketch()
+            .push(kbd_pillar_positions)
+            .circle(kbd_pillar_radius_1, mode="a"),
         },
         # Taller pillars with holes for self-tapping screws
         {
diff --git a/dimensions.py b/dimensions.py
index 6093942..1ba405e 100644
--- a/dimensions.py
+++ b/dimensions.py
@@ -141,4 +141,6 @@ screen_pillars.pillar_width = 12
 screen_pillars.pillar_height = 12
 screen_pillars.screw_head_radius = 3
 screen_pillars.screw_radius = 1.8
-screen_pillars.screw_head_depth = base_thickness - 13  # (screw thread length - threaded insert depth)
+screen_pillars.screw_head_depth = (
+    base_thickness - 13
+)  # (screw thread length - threaded insert depth)
diff --git a/hinged_lid.py b/hinged_lid.py
index 951d92e..f84924c 100644
--- a/hinged_lid.py
+++ b/hinged_lid.py
@@ -297,7 +297,10 @@ def model():
                     (0, 0),
                     (0, keyboard.kbd_front_thickness),
                     (dim.shell_t, keyboard.kbd_front_thickness),
-                    (keyboard.kbd_actual_height + dim.shell_t, keyboard.kbd_back_thickness),
+                    (
+                        keyboard.kbd_actual_height + dim.shell_t,
+                        keyboard.kbd_back_thickness,
+                    ),
                     (keyboard.kbd_actual_height + dim.shell_t, dim.base_thickness),
                     (dim.height, dim.base_thickness),
                     (dim.height, 0),
diff --git a/requirements.txt b/requirements.txt
index 430e0cb..29a8813 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 cadquery
 git+https://github.com/gumyr/cq_warehouse.git#egg=cq_warehouse
 flake8
+black