diff --git a/CHANGES/v2.4.txt b/CHANGES/v2.4.txt
index 4bbca3f5a9f9da9f4751068c1d704c8fa8a6f5a9..5e91d8c76b7633ee57c4a81cf46384b08a61c330 100644
--- a/CHANGES/v2.4.txt
+++ b/CHANGES/v2.4.txt
@@ -51,4 +51,6 @@ Changes from version 2.3 which are relevant for developers:
     and erroneous inputs.
   - Due to the required c++11 support, travis-ci test on Ubuntu Precise has been removed.
   - `gettimeofdate` and `gettime` have been replaced with portable `chrono` classes introduced in c++11.
+  - C++ exceptions are enabled by default.
+  - Stack trace is not written upon error anymore, unless environment variable `PLUMED_STACK_TRACE` is set at runtime.
 */