diff --git a/docs/conf.py b/docs/conf.py
index 99c1349..a8db50f 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -86,9 +86,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '0.1.3b0'
+version = '0.1.3b1'
 # The full version, including alpha/beta/rc tags.
-release = '0.1.3b0'
+release = '0.1.3b1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/setup.py b/setup.py
index b2fbda4..a5d6ad8 100755
--- a/setup.py
+++ b/setup.py
@@ -65,7 +65,7 @@
 
 setup(
     name='libact',
-    version='0.1.3b0',
+    version='0.1.3b1',
     description='Pool-based active learning in Python',
     long_description=open('README.md').read(),
     author='Y.-Y. Yang, S.-C. Lee, Y.-A. Chung, T.-E. Wu, H.-T. Lin',