diff --git a/ChangeLog b/ChangeLog
index fd94079..4a56f1a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,10 +1,20 @@
 btrbk-0.27.0-dev
 
+  * MIGRATION
+    - update ssh_filter_btrbk.sh on remote hosts (btrbk always calls
+      "readlink" and "cat /proc/self/mounts").
   * Add "preserve_hour_of_day" configuration option (close #202).
   * Bugfix: correct scheduling of "first weekly backup in month/year"
     (close #217). Note that this change may result in (previously
     preserved) backups to be deleted!
   * Bugfix: add "btrfs filesystem usage" backend mapping (close #222).
+  * Enhance internal data structures:
+    - Allow snapshot_dir to be a mountpoint.
+    - Search complete target tree for correlated subvolumes.
+    - Include snapshots from all mountpoints as candidates (disabled
+      due to uptream bug: github.com/kdave/btrfs-progs/issues/96).
+    - Always read /proc/self/mounts.
+    - Resolve realpath using readlink(1).
 
 btrbk-0.26.1