diff --git a/.gitignore b/.gitignore
index c3a3849..203df68 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 __pycache__
 lib/
 requirements.txt
+micropython.bin
diff --git a/ESP8266_GENERIC-20240222-v1.22.2.bin b/ESP8266_GENERIC-20240222-v1.22.2.bin
deleted file mode 100644
index b0ec170..0000000
Binary files a/ESP8266_GENERIC-20240222-v1.22.2.bin and /dev/null differ
diff --git a/Makefile b/Makefile
index 719d21b..818350b 100644
--- a/Makefile
+++ b/Makefile
@@ -51,8 +51,11 @@ check: src/*.mpy
 erase_flash:
 	$(ESP_TOOL) erase_flash
 
-flash_esp: erase_flash
-	$(ESP_TOOL) --baud 460800 write_flash --flash_size=detect 0 $(MICRO_PYTHON_FIRMWARE)
+micropython.bin:
+	curl --output micropython.bin https://micropython.org/resources/firmware/$(MICRO_PYTHON_FIRMWARE)
+
+flash_esp: erase_flash micropython.bin
+	$(ESP_TOOL) --baud 460800 write_flash --flash_size=detect 0 micropython.bin
 
 install: check install_lib $(JUPYTER_PYTHON_FILES)
 	$(AMPY) put src/main.py