diff --git a/version.py b/version.py
index 15cb3c2..fb699ef 100644
--- a/version.py
+++ b/version.py
@@ -27,4 +27,4 @@
 # SOFTWARE,  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
-__version__ = "0.4.7a27"
+__version__ = "0.4.7a28"