diff --git a/cython/python_solvespace/__init__.py b/cython/python_solvespace/__init__.py
index 1e4a1b42..54bc8802 100644
--- a/cython/python_solvespace/__init__.py
+++ b/cython/python_solvespace/__init__.py
@@ -8,7 +8,7 @@ __author__ = "Yuan Chang"
 __copyright__ = "Copyright (C) 2016-2019"
 __license__ = "GPLv3+"
 __email__ = "pyslvs@gmail.com"
-__version__ = "3.0.0.post5"
+__version__ = "3.0.0.post6"
 
 from .slvs import (
     quaternion_u,