diff --git a/CHANGES/v2.10.md b/CHANGES/v2.10.md
index 4b6df535ed..0a5c12d1eb 100644
--- a/CHANGES/v2.10.md
+++ b/CHANGES/v2.10.md
@@ -8,3 +8,4 @@ This page contains changes that will end up in 2.10
 
 - Changes relevant for developers:
   - Removed some shortcuts for `ActionRegister.h` (from the modules bias colvar function sasa and vatom) and `CLToolRegister.h` (from the module cltools), now the two headers can only be included with `#include "core/ActionRegister.h"` or `#include "core/CLToolRegister.h"`.
+  - `plumed mklib` can now process more than one cpp file. Files are combined in a single library.