diff --git a/README.rst b/README.rst
index b8f1136..c8399fc 100644
--- a/README.rst
+++ b/README.rst
@@ -11,7 +11,7 @@ A utility for plotting `SEG-Y files <http://www.agilegeoscience.com/blog/2014/3/
     :target: #
     :alt: Release
 
-.. image:: https://img.shields.io/badge/python-3.4,_3.5-blue.svg?style=flat-square
+.. image:: https://img.shields.io/badge/python-3.6%2B-blue.svg?style=flat-square
     :target: #
     :alt: Python version
 
diff --git a/_version.py b/_version.py
index afe4cbd..2b4f83e 100644
--- a/_version.py
+++ b/_version.py
@@ -4,4 +4,4 @@
 
 Doing it this way provides for access in setup.py and via __version__
 """
-__version__ = "0.3"
+__version__ = "0.4"