diff --git a/metabolabpy/__init__.py b/metabolabpy/__init__.py
index 62375a4..f690a2c 100644
--- a/metabolabpy/__init__.py
+++ b/metabolabpy/__init__.py
@@ -1,4 +1,4 @@
 __author__ = 'Christian Ludwig (C.Ludwig@bham.ac.uk)'
 __credits__ = 'Christian Ludwig (C.Ludwig@bham.ac.uk)'
-__version__ = '0.9.63'
+__version__ = '0.9.64'
 __license__ = 'GPLv3'