diff --git a/firmware/CHANGELOG.md b/firmware/CHANGELOG.md
index 2c01e56272..bafec63645 100644
--- a/firmware/CHANGELOG.md
+++ b/firmware/CHANGELOG.md
@@ -27,6 +27,7 @@ Release template (copy/paste this for new release):
  - FasterEngineSpinUp should be enabled by default #4094
  - ETB low limit is now configurable #4119
  - Advanced Trigger option: require engine phase synchronization in sequential mode #4151
+ - Maintainability: frequency sensors need a simple event counter in the logs #4173
 
 ### Fixed
  - Make 36-2 trigger sync parameters more generous #4132