diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2bb4f13..9ce539d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # GRAPE-nf Changelog
 
+## Version 1.2.1 
+
+* Update numeric type for memory in mapping module - fix regression
+
 ## Version 1.2 
 
 * Add CFF file for citattion - resolve #75