diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index ba78eaaa..8f69bb62 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -27,6 +27,7 @@
 #include <Adafruit_BME280.h>
 #include <MPU6050_tockn.h>
 #include <EEPROM.h>
+#include <Arduino-APRS-Library.h>
 
 Adafruit_INA219 ina219_1_0x40;
 Adafruit_INA219 ina219_1_0x41(0x41);