diff --git a/doc/index.html b/doc/index.html
index a799041..95873d1 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -2558,7 +2558,7 @@ If available versions [3-6] are specifically detected.</p>
 <div class="sect3">
 <h4 id="_boost_arch_x86_64"><a class="anchor" href="#_boost_arch_x86_64"></a>4.1.21. <code>BOOST_ARCH_X86_64</code></h4>
 <div class="paragraph">
-<p><a href="http://en.wikipedia.org/wiki/Ia64">Intel IA-64</a> architecture.</p>
+<p><a href="https://en.wikipedia.org/wiki/X86-64">X86-64</a> architecture.</p>
 </div>
 <table class="tableblock frame-all grid-all stretch">
 <colgroup>
diff --git a/include/boost/predef/architecture/x86/64.h b/include/boost/predef/architecture/x86/64.h
index f0554a0..6f59722 100644
--- a/include/boost/predef/architecture/x86/64.h
+++ b/include/boost/predef/architecture/x86/64.h
@@ -1,5 +1,5 @@
 /*
-Copyright Rene Rivera 2008-2015
+Copyright Rene Rivera 2008-2021
 Distributed under the Boost Software License, Version 1.0.
 (See accompanying file LICENSE_1_0.txt or copy at
 http://www.boost.org/LICENSE_1_0.txt)
@@ -14,7 +14,7 @@ http://www.boost.org/LICENSE_1_0.txt)
 /* tag::reference[]
 = `BOOST_ARCH_X86_64`
 
-http://en.wikipedia.org/wiki/Ia64[Intel IA-64] architecture.
+https://en.wikipedia.org/wiki/X86-64[X86-64] architecture.
 
 [options="header"]
 |===