diff --git a/CHANGES b/CHANGES
index f15e3eae..3490254f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -409,3 +409,7 @@ o merged changes from V_1_2_0_35_NEUHAUS
 Version 1.2.2
 -------------
 o merged changes from V_1_2_1_7_NEUHAUS
+
+Version 1.2.3
+-------------
+o changed interfaces of YVariant and YStringTree
diff --git a/VERSION b/VERSION
index 83d63903..5577dbda 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.2.2-2-dev
+1.2.3-0-dev