diff --git a/esphomeflasher/const.py b/esphomeflasher/const.py
index 4e41f39..b647373 100644
--- a/esphomeflasher/const.py
+++ b/esphomeflasher/const.py
@@ -5,7 +5,7 @@ __version__ = "1.3.1"
 ESP32_DEFAULT_OTA_DATA = 'https://raw.githubusercontent.com/espressif/arduino-esp32/1.0.0/tools/partitions/boot_app0.bin'
 ESP32_DEFAULT_BOOTLOADER_FORMAT = 'https://raw.githubusercontent.com/espressif/arduino-esp32/' \
                                   '1.0.4/tools/sdk/bin/bootloader_$FLASH_MODE$_$FLASH_FREQ$.bin'
-ESP32_DEFAULT_PARTITIONS = 'https://raw.githubusercontent.com/esphome/esphomeflasher/master/partitions.bin'
+ESP32_DEFAULT_PARTITIONS = 'https://raw.githubusercontent.com/esphome/esphomeflasher/main/partitions.bin'
 
 # https://stackoverflow.com/a/3809435/8924614
 HTTP_REGEX = re.compile(r'https?://(www\.)?[-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_+.~#?&/=]*)')