diff --git a/doc/next/7-ports.md b/doc/next/7-ports.md
index b8631378e8f..96cf661772b 100644
--- a/doc/next/7-ports.md
+++ b/doc/next/7-ports.md
@@ -5,6 +5,12 @@
 As [announced](go1.23#linux) in the Go 1.23 release notes, Go 1.24 requires Linux
 kernel version 3.2 or later.
 
+### Darwin {#darwin}
+
+<!-- go.dev/issue/69839 -->
+Go 1.24 is the last release that will run on macOS 11 Big Sur.
+Go 1.25 will require macOS 12 Monterey or later.
+
 ### WebAssembly {#wasm}
 
 The support files for WebAssembly have been moved to `lib/wasm` from `misc/wasm`.