diff --git a/docs/source/conf.py b/docs/source/conf.py
index 51c3e67..7d8e0cc 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -26,7 +26,7 @@ project = 'pyexcel-io'
 copyright = '2015-2022 Onni Software Ltd.'
 author = 'C.W.'
 # The short X.Y version
-version = '0.6.5'
+version = '0.6.6'
 # The full version, including alpha/beta/rc tags
 release = '0.6.6'
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index ac12734..baf6fd9 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -10,7 +10,6 @@
 :Source code: http://github.com/pyexcel/pyexcel-io.git
 :Issues: http://github.com/pyexcel/pyexcel-io/issues
 :License: New BSD License
-:Development: |release|
 :Released: |version|
 :Generated: |today|