diff --git a/CHANGELOG.md b/CHANGELOG.md
index e2523bcd9..05b20aac8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -70,6 +70,7 @@ You can install this version by running `pip install rocketpy==1.2.0`
 
 ### Fixed
 
+- BUG: fix `get_controller_observed_variables` in the air brakes examples [#551](https://github.com/RocketPy-Team/RocketPy/pull/551)
 - MNT: small fixes before v1.2 [#550](https://github.com/RocketPy-Team/RocketPy/pull/550)
 - BUG: Elliptical Fins Draw [#548](https://github.com/RocketPy-Team/RocketPy/pull/548)
 - BUG: 3D trajectory plot not labeling axes [#533](https://github.com/RocketPy-Team/RocketPy/pull/533)