diff --git a/doc/release.notes b/doc/release.notes
index faf0b2c519b110ef365636387d4cac66ca81841a..98737f8199e92ddd0c1c503620450f29ecd3edf2 100644
--- a/doc/release.notes
+++ b/doc/release.notes
@@ -4,6 +4,9 @@ DD4hep  ----  Release Notes
 =================================
 
 
+2016-05-03 M.Frank
+  Green light is ON. You may use revision 2237 and above.
+
 2016-05-03 M.Frank
   ++++++++++++++++++++  NOTE: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   - Mega commit. Do not use until green signal arrives with seperate release notice.