diff --git a/platformio.ini b/platformio.ini
index a0dc9ff..e3ccffb 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -72,21 +72,25 @@ build_unflags = -Os -std=gnu++11 -std=gnu++17
 platform = espressif8266 @ 4.2.1
 board = esp12e
 custom_slime_board = BOARD_WEMOSD1MINI
+upload_speed = 921600
 
 [env:BOARD_NODEMCU]
 platform = espressif8266 @ 4.2.1
 board = esp12e
 custom_slime_board = BOARD_NODEMCU
+upload_speed = 921600
 
 [env:BOARD_TTGO_TBASE]
 platform = espressif8266 @ 4.2.1
 board = esp12e
 custom_slime_board = BOARD_TTGO_TBASE
+upload_speed = 921600
 
 [env:BOARD_WEMOSWROOM02]
 platform = espressif8266 @ 4.2.1
 board = esp12e
 custom_slime_board = BOARD_WEMOSWROOM02
+upload_speed = 921600
 
 [env:BOARD_WROOM32]
 platform = espressif32 @ 6.7.0
@@ -101,6 +105,7 @@ platform = espressif8266 @ 4.2.1
 board = esp01_1m
 board_build.arduino.ldscript = "eagle.flash.1m64.ld"
 custom_slime_board = BOARD_ESP01
+upload_speed = 921600
 
 [env:BOARD_LOLIN_C3_MINI]
 platform = espressif32 @ 6.7.0