diff --git a/.github/workflows/main/installDependencies.py b/.github/workflows/main/installDependencies.py
index 04e5a5b7cb..81676e8dbb 100755
--- a/.github/workflows/main/installDependencies.py
+++ b/.github/workflows/main/installDependencies.py
@@ -49,7 +49,7 @@
 
 # Determine default archive URL.
 
-defaultURL = "https://github.com/ImageEngine/cortex/releases/download/10.5.9.0/cortex-10.5.9.0-{platform}{buildEnvironment}.{extension}"
+defaultURL = "https://github.com/ImageEngine/cortex/releases/download/10.5.9.1/cortex-10.5.9.1-{platform}{buildEnvironment}.{extension}"
 
 # Parse command line arguments.
 
diff --git a/Changes.md b/Changes.md
index 2b4ad6f674..c3fa9cdec4 100644
--- a/Changes.md
+++ b/Changes.md
@@ -80,12 +80,18 @@ Fixes
 - LightEditor : Fixed regression (introduced in 1.4.8.0) causing the mute and solo icons to not show up for groups.
 - Windows : Fixed conflicts with other software installations on `PATH`. The `PXR_USD_WINDOWS_DLL_PATH` environment variable is now set to an empty string if it is not already set, preventing USD from adding all entries from `PATH` to Python's DLL search paths.
 - AnnotationsGadget : Fixed potential hang in `annotationText()` Python binding.
+- ImageReader : Fixed array metadata loading bugs, including the loading of `ICCProfile` metadata.
 
 API
 ---
 
 - PopupWindow : Added `parent` argument to `popup()` method. This allows popup windows to inherit the display transform from the main UI.
 
+Build
+-----
+
+- Cortex : Updated to version 10.5.9.1.
+
 1.4.8.0 (relative to 1.4.7.0)
 =======