diff --git a/gprMax/gprMax.py b/gprMax/gprMax.py
index 4835db95..738578f3 100644
--- a/gprMax/gprMax.py
+++ b/gprMax/gprMax.py
@@ -19,7 +19,7 @@
 """gprMax.gprMax: provides entry point main()."""
 
 # Set the version number here
-__version__ = '3.0.0b2'
+__version__ = '3.0.0b3'
 versionname = ' (Bowmore)'
 
 import sys, os, datetime, itertools, argparse