diff --git a/Changelog.md b/Changelog.md
index 53fbc84a18b..5b67d1e7460 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -55,6 +55,9 @@
 1. Use a [std::promise](https://en.cppreference.com/w/cpp/thread/promise)/[std::future](https://en.cppreference.com/w/cpp/thread/future) mechanism to avoid waiting in a looop until all `stepAck` messages are received
     * [pull request 470](https://github.com/ignitionrobotics/ign-gazebo/pull/470)
 
+1. Optical Tactile Sensor Plugin
+    * [pull request 229](https://github.com/ignitionrobotics/ign-gazebo/pull/229)
+
 1. All changes up to and including those in version 3.5.0 and version 2.25.0
 
 ### Ignition Gazebo 4.0.0 (2020-09-30)