diff --git a/CHANGES b/CHANGES
index 0246c902..c7d2954b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+2023-03-16
+
+* User input validation was added to the setting of RGB and CMYK colours.
+
+
 2023-02-16
 
 * The mailmark option in the Data Matrix encoder was replaced with a generic c40headerlength option.