diff --git a/PyMca5/__init__.py b/PyMca5/__init__.py
index 9a71f21c1..1faf59449 100644
--- a/PyMca5/__init__.py
+++ b/PyMca5/__init__.py
@@ -27,7 +27,7 @@
 __contact__ = "sole@esrf.fr"
 __license__ = "MIT"
 __copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
-__version__ = "5.6.5"
+__version__ = "5.6.6"
 
 import os
 import sys
diff --git a/changelog.txt b/changelog.txt
index d9ddcd720..af0d0ead8 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,12 @@
+VERSION 5.6.6
+-------------
+
+- Graphics. Recent versions of Matplotlib do not support picker=None.
+
+- IO. Support AXAS-D format independently of using ","  or "." as decimal separator.
+
+- IO. Calculate live time as elapsed time * OCR/ICR in AXAS-D format
+
 VERSION 5.6.5
 -------------