README: update minimum macOS

Homebrew · Jun 16, 2020 · b1c3330 · b1c3330
1 parent da90b39
commit b1c3330
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -10,7 +10,7 @@ Just `brew install homebrew/portable-ruby/<formula>`.
 
 ### macOS
 
-Run `brew portable-package ruby` inside an OS X 10.9 VM (so it is compatible with all working Homebrew macOS versions).
+Run `brew portable-package ruby` inside an OS X 10.10 VM (so it is compatible with all working Homebrew macOS versions).
 
 ### Linux