diff --git a/doc/debugging_with_gdb.html b/doc/debugging_with_gdb.html
index ca9d9a7c46..f3b4e37a28 100644
--- a/doc/debugging_with_gdb.html
+++ b/doc/debugging_with_gdb.html
@@ -57,7 +57,7 @@ Besides this overview you might want to consult the
 
 <p>
 When you compile and link your Go programs with the <code>gc</code> toolchain
-on Linux, Mac OS X, FreeBSD or NetBSD, the resulting binaries contain DWARFv4
+on Linux, macOS, FreeBSD or NetBSD, the resulting binaries contain DWARFv4
 debugging information that recent versions (&ge;7.5) of the GDB debugger can
 use to inspect a live process or a core dump.
 </p>
diff --git a/doc/go_faq.html b/doc/go_faq.html
index e83408e6f1..e020ce12c1 100644
--- a/doc/go_faq.html
+++ b/doc/go_faq.html
@@ -1396,7 +1396,7 @@ reservation does not deprive other processes of memory.
 <p>
 To find the amount of actual memory allocated to a Go process, use the Unix
 <code>top</code> command and consult the <code>RES</code> (Linux) or
-<code>RSIZE</code> (Mac OS X) columns.
+<code>RSIZE</code> (macOS) columns.
 <!-- TODO(adg): find out how this works on Windows -->
 </p>
 
diff --git a/doc/install-source.html b/doc/install-source.html
index 844fb002f7..f6d9473d9b 100644
--- a/doc/install-source.html
+++ b/doc/install-source.html
@@ -98,7 +98,7 @@ goroutines, such as stacks that grow and shrink on demand.
 
 <p>
 The compilers can target the DragonFly BSD, FreeBSD, Linux, NetBSD, OpenBSD,
-OS X (Darwin), Plan 9, Solaris and Windows operating systems.
+macOS (Darwin), Plan 9, Solaris and Windows operating systems.
 The full set of supported combinations is listed in the discussion of
 <a href="#environment">environment variables</a> below.
 </p>
@@ -468,7 +468,7 @@ These default to the values of <code>$GOHOSTOS</code> and
 
 <p>
 Choices for <code>$GOOS</code> are
-<code>darwin</code> (Mac OS X 10.8 and above and iOS), <code>dragonfly</code>, <code>freebsd</code>,
+<code>darwin</code> (macOS 10.10 and above and iOS), <code>dragonfly</code>, <code>freebsd</code>,
 <code>linux</code>, <code>netbsd</code>, <code>openbsd</code>,
 <code>plan9</code>, <code>solaris</code> and <code>windows</code>.
 Choices for <code>$GOARCH</code> are
diff --git a/doc/install.html b/doc/install.html
index cd51e7603a..3bb4a15b25 100644
--- a/doc/install.html
+++ b/doc/install.html
@@ -17,7 +17,7 @@
 <p>
 <a href="/dl/" target="_blank">Official binary
 distributions</a> are available for the FreeBSD (release 10-STABLE and above),
-Linux, Mac OS X (10.8 and above), and Windows operating systems and
+Linux, macOS (10.10 and above), and Windows operating systems and
 the 32-bit (<code>386</code>) and 64-bit (<code>amd64</code>) x86 processor
 architectures.
 </p>
@@ -49,7 +49,7 @@ If your OS or architecture is not on the list, you may be able to
 <tr><td colspan="3"><hr></td></tr>
 <tr><td>FreeBSD 10.3 or later</td> <td>amd64, 386</td> <td>Debian GNU/kFreeBSD not supported</td></tr>
 <tr valign='top'><td>Linux 2.6.23 or later with glibc</td> <td>amd64, 386, arm, arm64,<br>s390x, ppc64le</td> <td>CentOS/RHEL 5.x not supported.<br>Install from source for other libc.</td></tr>
-<tr><td>macOS 10.8 or later</td> <td>amd64</td> <td>use the clang or gcc<sup>&#8224;</sup> that comes with Xcode<sup>&#8225;</sup> for <code>cgo</code> support</td></tr>
+<tr><td>macOS 10.10 or later</td> <td>amd64</td> <td>use the clang or gcc<sup>&#8224;</sup> that comes with Xcode<sup>&#8225;</sup> for <code>cgo</code> support</td></tr>
 <tr><td>Windows XP SP2 or later</td> <td>amd64, 386</td> <td>use MinGW gcc<sup>&#8224;</sup>. No need for cygwin or msys.</td></tr>
 </table>
 
@@ -74,7 +74,7 @@ first <a href="#uninstall">remove the existing version</a>.
 
 <div id="tarballInstructions">
 
-<h3 id="tarball">Linux, Mac OS X, and FreeBSD tarballs</h3>
+<h3 id="tarball">Linux, macOS, and FreeBSD tarballs</h3>
 
 <p>
 <a href="/dl/">Download the archive</a>
@@ -118,7 +118,7 @@ or execute them from the profile using a command such as
 
 <div id="darwinPackageInstructions">
 
-<h3 id="osx">Mac OS X package installer</h3>
+<h3 id="macos"><div id="osx"></div>macOS package installer</h3>
 
 <p>
 <a href="/dl/">Download the package file</a>,
@@ -276,7 +276,7 @@ which describes some essential concepts about using the Go tools.
 <p>
 To remove an existing Go installation from your system delete the
 <code>go</code> directory. This is usually <code>/usr/local/go</code>
-under Linux, Mac OS X, and FreeBSD or <code>c:\Go</code>
+under Linux, macOS, and FreeBSD or <code>c:\Go</code>
 under Windows.
 </p>
 
@@ -285,7 +285,7 @@ You should also remove the Go <code>bin</code> directory from your
 <code>PATH</code> environment variable.
 Under Linux and FreeBSD you should edit <code>/etc/profile</code> or
 <code>$HOME/.profile</code>.
-If you installed Go with the <a href="#osx">Mac OS X package</a> then you
+If you installed Go with the <a href="#macos">macOS package</a> then you
 should remove the <code>/etc/paths.d/go</code> file.
 Windows users should read the section about <a href="#windows_env">setting
 environment variables under Windows</a>.
diff --git a/doc/root.html b/doc/root.html
index 545b28d2d5..b7422f2128 100644
--- a/doc/root.html
+++ b/doc/root.html
@@ -62,7 +62,7 @@ simple, reliable, and efficient software.
 <span class="big">Download Go</span>
 <span class="desc">
 Binary distributions available for<br>
-Linux, Mac OS X, Windows, and more.
+Linux, macOS, Windows, and more.
 </span>
 </a>