diff --git a/ChangeLog.rst b/ChangeLog.rst
index a4cc6d82..df7d6831 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -6,6 +6,7 @@ ChangeLog
   * WIP (note to write asking CI help)
   * Add jack_position_t::tick_double, and flags around it
   * Add zalsa "-w" argument to wait for soundcard to be available
+  * Bump internal protocol version to 9 (due to struct alignment)
   * Fix alignment of fields for atomic accesses
   * Fix build for platforms needing __STDC_FORMAT_MACROS
   * Fix compilation of documentation