diff --git a/README.md b/README.md
index 002c072..43975d4 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,9 @@
 
 `krunkit` is a tool to launch configurable virtual machines using the [libkrun](https://github.com/containers/libkrun) platform.
 
+> [!IMPORTANT]
+> krunkit is only supported on hosts running macOS 14 or newer.
+
 ## Installation
 
 `krunkit` relies on the `efi` flavor of `libkrun`. At present, `libkrun-efi` is only available on macOS. We provide a Homebrew repository to install `krunkit` and all of its dependencies, installable with: