diff --git a/.github/workflows/main/installDependencies.py b/.github/workflows/main/installDependencies.py
index dc1beb1677d..db0018772a6 100755
--- a/.github/workflows/main/installDependencies.py
+++ b/.github/workflows/main/installDependencies.py
@@ -48,7 +48,7 @@
 
 # Determine default archive URL.
 
-defaultURL = "https://github.com/ImageEngine/cortex/releases/download/10.5.2.0/cortex-10.5.2.0-{platform}-python3.{extension}".format(
+defaultURL = "https://github.com/ImageEngine/cortex/releases/download/10.5.3.0/cortex-10.5.3.0-{platform}-python3.{extension}".format(
 	platform = { "darwin" : "osx", "win32" : "windows" }.get( sys.platform, "linux" ),
 	extension = "tar.gz" if sys.platform != "win32" else "zip"
 )
diff --git a/Changes.md b/Changes.md
index 51d3eba94d0..c7b5ed5f2db 100644
--- a/Changes.md
+++ b/Changes.md
@@ -43,6 +43,11 @@ API
   - Prevented `renameable` and `deletable` metadata from being copied during plug promotion.
 - MetadataAlgo : Added `deregisterRedundantValues()` method.
 
+Build
+-----
+
+- Cortex : Updated to version 10.5.3.0.
+
 1.3.5.0 (relative to 1.3.4.0)
 =======