diff --git a/docs/layers/lightlayer.rst b/docs/layers/lightlayer.rst
index 0c93c25..8830a8c 100644
--- a/docs/layers/lightlayer.rst
+++ b/docs/layers/lightlayer.rst
@@ -47,6 +47,9 @@ LightLayer.lightType
 
 ``app.project.item(index).layer(index).lightType``
 
+.. note::
+   ``LightType.ENVIRONMENT`` was added in After Effects 24.3
+
 **Description**
 
 For a light layer, its light type. Trying to set this attribute for a non-light layer produces an error.
@@ -59,3 +62,19 @@ A ``LightType`` enumerated value; read/write. One of:
 -  ``LightType.SPOT``
 -  ``LightType.POINT``
 -  ``LightType.AMBIENT``
+-  ``LightType.ENVIRONMENT``
+
+.. _LightLayer.lightSource:
+
+LightLayer.lightSource
+*********************************************
+
+``app.project.item(index).layer(index).lightSource``
+
+.. note::
+   ``LightLayer.lightSource`` was added in After Effects 24.3
+
+**Description**
+
+For a light layer, the layer to use as a light source when ``LightLayer.lightType`` is ``LightType.ENVIRONMENT``. ``LightLayer.layerSource`` must be a footage layer referencing a .EXR or .HDR footage item. Trying to set this attribute to any other layer produces an error.
+
diff --git a/docs/layers/threedmodellayer.rst b/docs/layers/threedmodellayer.rst
index ca2fd1f..bebf200 100644
--- a/docs/layers/threedmodellayer.rst
+++ b/docs/layers/threedmodellayer.rst
@@ -8,7 +8,7 @@ ThreeDModelLayer object
 ``app.project.item(index).layer(index)``
 
 .. note::
-   This functionality was added in After Effects (Beta) 24.4 and is subject to change while it remains in Beta.
+   This functionality was added in After Effects 24.4.
 
 **Description**