diff --git a/CODEOWNERS b/CODEOWNERS
index d5df9e8109..0f22c8ace9 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -45,6 +45,7 @@ esphome/components/json/* @OttoWinter
 esphome/components/ledc/* @OttoWinter
 esphome/components/light/* @esphome/core
 esphome/components/logger/* @esphome/core
+esphome/components/max7219digit/* @rspaargaren
 esphome/components/mcp23s08/* @SenexCrenshaw
 esphome/components/mcp23s17/* @SenexCrenshaw
 esphome/components/mcp2515/* @danielschramm @mvturnho
diff --git a/esphome/components/max7219digit/display.py b/esphome/components/max7219digit/display.py
index e9aba13287..4863312b5a 100644
--- a/esphome/components/max7219digit/display.py
+++ b/esphome/components/max7219digit/display.py
@@ -3,45 +3,61 @@ import esphome.config_validation as cv
 from esphome.components import display, spi
 from esphome.const import CONF_ID, CONF_INTENSITY, CONF_LAMBDA, CONF_NUM_CHIPS
 
-DEPENDENCIES = ['spi']
+CODEOWNERS = ["@rspaargaren"]
+DEPENDENCIES = ["spi"]
 
-CONF_ROTATE_CHIP = 'rotate_chip'
-CONF_SCROLL_SPEED = 'scroll_speed'
-CONF_SCROLL_DWELL = 'scroll_dwell'
-CONF_SCROLL_DELAY = 'scroll_delay'
-CONF_SCROLL_ENABLE = 'scroll_enable'
-CONF_SCROLL_MODE = 'scroll_mode'
-CONF_REVERSE_ENABLE = 'reverse_enable'
+CONF_ROTATE_CHIP = "rotate_chip"
+CONF_SCROLL_SPEED = "scroll_speed"
+CONF_SCROLL_DWELL = "scroll_dwell"
+CONF_SCROLL_DELAY = "scroll_delay"
+CONF_SCROLL_ENABLE = "scroll_enable"
+CONF_SCROLL_MODE = "scroll_mode"
+CONF_REVERSE_ENABLE = "reverse_enable"
 
 SCROLL_MODES = {
-    'CONTINUOUS': 0,
-    'STOP': 1,
+    "CONTINUOUS": 0,
+    "STOP": 1,
 }
 
 CHIP_MODES = {
-    '0': 0,
-    '90': 1,
-    '180': 2,
-    '270': 3,
+    "0": 0,
+    "90": 1,
+    "180": 2,
+    "270": 3,
 }
 
-max7219_ns = cg.esphome_ns.namespace('max7219digit')
-MAX7219Component = max7219_ns.class_('MAX7219Component', cg.PollingComponent, spi.SPIDevice,
-                                     display.DisplayBuffer)
-MAX7219ComponentRef = MAX7219Component.operator('ref')
+max7219_ns = cg.esphome_ns.namespace("max7219digit")
+MAX7219Component = max7219_ns.class_(
+    "MAX7219Component", cg.PollingComponent, spi.SPIDevice, display.DisplayBuffer
+)
+MAX7219ComponentRef = MAX7219Component.operator("ref")
 
-CONFIG_SCHEMA = display.BASIC_DISPLAY_SCHEMA.extend({
-    cv.GenerateID(): cv.declare_id(MAX7219Component),
-    cv.Optional(CONF_NUM_CHIPS, default=4): cv.int_range(min=1, max=255),
-    cv.Optional(CONF_INTENSITY, default=15): cv.int_range(min=0, max=15),
-    cv.Optional(CONF_ROTATE_CHIP, default='0'): cv.enum(CHIP_MODES, upper=True),
-    cv.Optional(CONF_SCROLL_MODE, default='CONTINUOUS'): cv.enum(SCROLL_MODES, upper=True),
-    cv.Optional(CONF_SCROLL_ENABLE, default=True): cv.boolean,
-    cv.Optional(CONF_SCROLL_SPEED, default='250ms'): cv.positive_time_period_milliseconds,
-    cv.Optional(CONF_SCROLL_DELAY, default='1000ms'): cv.positive_time_period_milliseconds,
-    cv.Optional(CONF_SCROLL_DWELL, default='1000ms'): cv.positive_time_period_milliseconds,
-    cv.Optional(CONF_REVERSE_ENABLE, default=False): cv.boolean,
-}).extend(cv.polling_component_schema('500ms')).extend(spi.spi_device_schema(cs_pin_required=True))
+CONFIG_SCHEMA = (
+    display.BASIC_DISPLAY_SCHEMA.extend(
+        {
+            cv.GenerateID(): cv.declare_id(MAX7219Component),
+            cv.Optional(CONF_NUM_CHIPS, default=4): cv.int_range(min=1, max=255),
+            cv.Optional(CONF_INTENSITY, default=15): cv.int_range(min=0, max=15),
+            cv.Optional(CONF_ROTATE_CHIP, default="0"): cv.enum(CHIP_MODES, upper=True),
+            cv.Optional(CONF_SCROLL_MODE, default="CONTINUOUS"): cv.enum(
+                SCROLL_MODES, upper=True
+            ),
+            cv.Optional(CONF_SCROLL_ENABLE, default=True): cv.boolean,
+            cv.Optional(
+                CONF_SCROLL_SPEED, default="250ms"
+            ): cv.positive_time_period_milliseconds,
+            cv.Optional(
+                CONF_SCROLL_DELAY, default="1000ms"
+            ): cv.positive_time_period_milliseconds,
+            cv.Optional(
+                CONF_SCROLL_DWELL, default="1000ms"
+            ): cv.positive_time_period_milliseconds,
+            cv.Optional(CONF_REVERSE_ENABLE, default=False): cv.boolean,
+        }
+    )
+    .extend(cv.polling_component_schema("500ms"))
+    .extend(spi.spi_device_schema(cs_pin_required=True))
+)
 
 
 def to_code(config):
@@ -61,6 +77,7 @@ def to_code(config):
     cg.add(var.set_reverse(config[CONF_REVERSE_ENABLE]))
 
     if CONF_LAMBDA in config:
-        lambda_ = yield cg.process_lambda(config[CONF_LAMBDA], [(MAX7219ComponentRef, 'it')],
-                                          return_type=cg.void)
+        lambda_ = yield cg.process_lambda(
+            config[CONF_LAMBDA], [(MAX7219ComponentRef, "it")], return_type=cg.void
+        )
         cg.add(var.set_writer(lambda_))