diff --git a/platformio.ini b/platformio.ini
index 5cd6607c..75f38fae 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -961,6 +961,7 @@ lib_deps_V4_M =
   paulstoffregen/OneWire@ ^2.3.7 ; used for USERMOD_DALLASTEMPERATURE -> need newer release with bugfixes for -S3; still requires TEMPERATURE_PIN < 46
   olikraus/U8g2@ ^2.34.5 ; used for USERMOD_FOUR_LINE_DISPLAY -> need newer version with bugfixes for arduino-esp32 v2.0.4 (Wire inititialization) 
   ${common_mm.animartrix_lib_deps}
+  https://github.com/pixelmatix/SmartMatrix.git @ 4.0.3
 
 build_flags_XL = 
   -D USERMOD_WEATHER ; WLEDMM usermod