diff --git a/platformio.ini b/platformio.ini
index 083d986..09f8955 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,6 +14,8 @@ board = ATmega328P
 framework = arduino
 
 board_build.f_cpu = 20000000L
+build_unflags = -Os
+build_flags = -O2
 
 ; for potential future use with serial debugging:
 ; lib_deps = https://github.com/nickgammon/SendOnlySoftwareSerial.git