diff --git a/Changelog b/Changelog
index aa057af06161cfabd4ddaff7648e391c939cebe8..acdfc594a36202a9d34070ed52b9001cef707e65 100644
--- a/Changelog
+++ b/Changelog
@@ -17,6 +17,7 @@
 Open Source Release <next-release>
 ##################################
 
+-   Inout     [2019/04/01] Fix performance issue when initializing large arrays.
 -   ACSL      [2019/03/08] Add check annotation, similar to assert except that
               it does not introduce additional hypotheses on the program state
 -*  Makefile  [2019/03/07] Do not attempt to install .cmx on bytecode-only