diff --git a/README.md b/README.md
index aa24f7a..0e80821 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ Please ensure you have read and understood first the [Xcode license terms](https
 
 ## SDKs
 
+- [Mac OS X 11.3 (macOS Big Sur)](https://github.com/joseluisq/macosx-sdks/releases/tag/11.3)
 - [Mac OS X 11.1 (macOS Big Sur)](https://github.com/joseluisq/macosx-sdks/releases/tag/11.1)
 - [Mac OS X 10.15 (macOS Catalina)](https://github.com/joseluisq/macosx-sdks/releases/tag/10.15)
 - [Mac OS X 10.14 (macOS Mojave)](https://github.com/joseluisq/macosx-sdks/releases/tag/10.14)