Update version number to 2.6.1.
diff --git a/CHANGES.txt b/CHANGES.txt
index affc419..0d0ac81 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,4 @@
-2014-10-09 version 2.6.1rc1:
+2014-10-20 version 2.6.1:
 
   C++
   * Added atomicops support for Solaris.