diff --git a/README.md b/README.md
index 7b480822..9c561972 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,8 @@ Installers
 
 Refer to the [downloads page](http://etcher.io) for the latest pre-made installers for all supported operating systems.
 
+> Etcher only supports OS X >= 10.9
+
 Developing
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