diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index bea2d37d703687d2924f02c4f76c7a4813759dd4..1b51d34bc53910b15b7ffa670fe6227a2ab797de 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,5 +1,6 @@
 Unreleased changes
 ------------------
+* ``km3net-dataformat`` updated to 2.0.0
 
 Version 0
 ---------