diff --git a/CHANGELOG.md b/CHANGELOG.md
index 62746ba68..3d7ae6744 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,7 +26,7 @@ Version 1.5.4
 - create function "OVERLAPSI", which will detect period of date overlapping, replacing NULL date by infinity or -infinity (see [postgresql page for date time function and operators](https://www.postgresql.org/docs/9.6/static/functions-datetime.html))
 - add repository for Center class
 
-Master branch
+Version 1.5.5
 =============
 
 - add margin of 0.5rem beyond buttons ;