diff --git a/panflute/version.py b/panflute/version.py
index 9abc66c..d233f72 100644
--- a/panflute/version.py
+++ b/panflute/version.py
@@ -2,4 +2,4 @@
 Panflute version
 """
 
-__version__ = '2.3.0'
+__version__ = '2.3.1'