diff --git a/README.md b/README.md
index 4090c2f..f3b6690 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,8 @@ screenshot
 * Go library to capture desktop screen.
 * Multiple display supported.
 * Supported GOOS: windows, darwin, linux, freebsd, openbsd, and netbsd.
-* `cgo` free except for GOOS=darwin.
+* `cgo` free except for GOOS=darwin. (min MAC_OS_VERSION_14_4)
+  
 
 example
 =======