diff --git a/setup.py b/setup.py
index 7b77d4f..b47aef0 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 from setuptools import setup
 
 setup(name='kaldiio',
-      version='2.13.8',
+      version='2.13.9',
       description='Kaldi-ark loading and writing module',
       author='nttcslab-sp',
       # author_email='',