diff --git a/Changelog.md b/Changelog.md
index 85dbdf849f..866d44e1a5 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -4,6 +4,9 @@
 
 ### Ignition Gazebo 4.0.0 (20XX-XX-XX)
 
+1. Added support for removing sensors at runtime
+    * [Pull Request 558](https://bitbucket.org/ignitionrobotics/ign-gazebo/pull-requests/558)
+
 1. Support <actor><pose> and <actor><plugin>
     * [Pull Request 542](https://bitbucket.org/ignitionrobotics/ign-gazebo/pull-requests/542)
 
diff --git a/Migration.md b/Migration.md
index ef62482449..40c8024db5 100644
--- a/Migration.md
+++ b/Migration.md
@@ -7,7 +7,15 @@ release will remove the deprecated code.
 
 ## Ignition Gazebo 3.x to 4.x
 
-* The CreateSensor function in the Sensors system, as well as the callbacks in gazebo rendering, have a new required function argument for the Entity of the sensor.
+* The `RenderUtil::SetEnabledSensors` callback in gazebo rendering has a new
+  required function argument for the Entity of the sensor.
+    * ***Removed***
+      `public: void SetEnableSensors(bool, std::function<
+          std::string(const sdf::Sensor &, const std::string &)>)`
+    * ***Replacement***
+      `public: void SetEnableSensors(bool, std::function<
+          std::string(const gazebo::Entity &,
+          const sdf::Sensor &, const std::string &)>)`
 
 ## Ignition Gazebo 2.x to 3.x