diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9273014..a8dcd12 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## [Unreleased]
 
+## v1.3.1
+### Added
+- add makefile to manage build
+
 ## v1.3.0
 ### Added
 - add argument to define the configuration file