diff --git a/CHANGES/v2.4.md b/CHANGES/v2.4.md
index 65af7b711d42078cae3f800504405a58350e0c17..8d1c091150562036ccf3f3cd810bae971de7e6dc 100644
--- a/CHANGES/v2.4.md
+++ b/CHANGES/v2.4.md
@@ -100,3 +100,4 @@ Fixes after alpha release:
     arguments such as `HEIGHT=exp(0.5)`.
   - \ref CUSTOM function has been added as an alias to \ref MATHEVAL .
   - (developers): `configure.ac` has been simplified and improved in order to more easily probe C++ libraries.
+  - (developers): added `plumed_custom_skip` function to regtests in order to skip specific tests based on specific conditions (e.g. OS).