diff --git a/doc/go1.7.html b/doc/go1.7.html
index d209a5ab0e..2dfa64da61 100644
--- a/doc/go1.7.html
+++ b/doc/go1.7.html
@@ -74,6 +74,12 @@ This change has no effect on the correctness of existing programs.
 
 <h2 id="ports">Ports</h2>
 
+<p>
+Go 1.7 adds support for macOS 10.12 Sierra.
+Binaries built with previous versions of Go will not work correctly on
+Sierra.
+</p>
+
 <p>
 Go 1.7 adds an experimental port to <a href="https://en.wikipedia.org/wiki/Linux_on_z_Systems">Linux on z Systems</a> (<code>linux/s390x</code>)
 and the beginning of a port to Plan 9 on ARM (<code>plan9/arm</code>).