diff --git a/ChangeLog b/ChangeLog
index 2f2c077..8bfdffa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,12 @@
+2017-08-03  Xie Yanbo  <xieyanbo@gmail.com>
+
+    * fix sys.stdout.encoding error
+    * release version 0.9.1
+
 2017-08-02  Xie Yanbo  <xieyanbo@gmail.com>
 
     * autocompletion keywords and selenium commands
+    * release version 0.9
 
 2017-07-31  Xie Yanbo  <xieyanbo@gmail.com>
 
diff --git a/DebugLibrary.py b/DebugLibrary.py
index cf29606..d0b044d 100644
--- a/DebugLibrary.py
+++ b/DebugLibrary.py
@@ -57,7 +57,7 @@
     # this will fail on IronPython
     pass
 
-__version__ = '0.9.0'
+__version__ = '0.9.1'
 
 KEYWORD_SEP = re.compile('  +|\t')