diff --git a/platformio.ini b/platformio.ini
index 0779fb4..ed1c1a4 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -3,7 +3,7 @@ platform = heltec-cubecell
 board = cubecell_board
 framework = arduino
 monitor_speed = 115200
-
+platform_packages = framework-arduinocubecell@https://github.com/H3wastooshort/CubeCell-Arduino#3866b52c792d676da2b2ce3e64a94c825ef48cc6 ;allow LTO and fix some bad decisions in Arduino.h
 build_flags =
     -D CUBECELL
     ; Size optimization flags from reference project
@@ -15,6 +15,9 @@ build_flags =
     -ffunction-sections
     -fdata-sections
     -Wl,--gc-sections
+    -fuse-linker-plugin
+    -flto=full
+    -fwhole-program
     -finline-limit=30
     ; RadioLib - exclude unused radio modules (project uses SX1262 only)
     -D RADIOLIB_EXCLUDE_CC1101=1