diff --git a/changelog/unreleased/issue-21 b/changelog/unreleased/issue-21
index a38074643..0a3040add 100644
--- a/changelog/unreleased/issue-21
+++ b/changelog/unreleased/issue-21
@@ -4,6 +4,11 @@ We have added compression support to the restic repository format. To create a
 repository using the new format run `init --repository-version 2`. Please note
 that the repository cannot be read by restic versions prior to 0.14.0.
 
+You can configure if data is compressed with the option `--compression`. It can
+be set to `auto` (the default, which will compress very fast), `max` (which
+will trade backup speed and CPU usage for better compression), or `off` (which
+disables compression). Each setting is only applied for the single run of restic.
+
 The new format version has not received much testing yet. Do not rely on it as
 your only backup copy! Please run `check` in regular intervals to detect any
 problems.