diff --git a/README.md b/README.md
index 595f20307..f98d5305d 100644
--- a/README.md
+++ b/README.md
@@ -115,6 +115,7 @@ request.
 Changelog
 ===========
 ```
+* 1.15: improve tristate checkbox graphics: undetermined state is now represented by a dash
 * 1.14: add support for tristate check boxes and for vertical and horizontal lines
 * 1.13: fix issue with horizontal scrollbar arrows, left and right were inversed.
 * 1.12: fix minimum size of input widgets (see issue #14)
diff --git a/qdarkstyle/__init__.py b/qdarkstyle/__init__.py
index 87cecc835..7b446f636 100644
--- a/qdarkstyle/__init__.py
+++ b/qdarkstyle/__init__.py
@@ -32,7 +32,7 @@ import logging
 import platform
 
 
-__version__ = "1.14"
+__version__ = "1.15"
 
 
 def _logger():