diff --git a/app.py b/app.py
index 456d46a..1a069b3 100755
--- a/app.py
+++ b/app.py
@@ -10,7 +10,7 @@ from minimalmodbus import Instrument, MODE_RTU
 import sys
 import time
 
-VERSION = '0.3.0'
+VERSION = '3.0.0'
 UNIT = 16
 
 MODBUS_FC_READ_SINGLE_COIL = int("0x01", 16)