diff --git a/setup.py b/setup.py
index c61dc98..23d6b72 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='0.0a3',
+    version='0.0a4',
 
     description='Potential impact calculation for well defined facilities due to an input earthquake hazard',
     long_description=long_description,