diff --git a/setup.py b/setup.py
index 60a9fbb..7bc095b 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@
 from distutils.core import setup
 from setuptools import find_packages
 
-BTCPYVERSION = '0.6.3'
+BTCPYVERSION = '0.6.4'
 
 requirements = ['ecdsa==0.13']