diff --git a/CHANGELOG b/CHANGELOG
index 0fb3a901..da7fd33e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,12 +1,12 @@
 Changelog
 =========
 
-0.6.6 (unreleased)
+0.6.6 (2017-06-12)
 ------------------
 
 - fix situation where a deindented comment between a if and elif/else broken
   parsing, see https://github.com/PyCQA/baron/issues/87
-- around 35-40% parsing speed improvment on big files by duncf
+- around 35-40% to 75% parsing speed improvment on big files by duncf
   https://github.com/PyCQA/baron/pull/99
 
 0.6.5 (2017-01-26)
diff --git a/setup.py b/setup.py
index 7aa15720..b0a4c374 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
 
 
 setup(name='baron',
-      version='0.6.5',
+      version='0.6.6',
       description='Full Syntax Tree for python to make writing refactoring code a realist task',
       author='Laurent Peuch',
       long_description=read_md("README.md") + "\n\n" + open("CHANGELOG", "r").read(),