diff --git a/libstdc++-v3/doc/html/manual/facets.html b/libstdc++-v3/doc/html/manual/facets.html
index 828b52f49bb..90f2e26e990 100644
--- a/libstdc++-v3/doc/html/manual/facets.html
+++ b/libstdc++-v3/doc/html/manual/facets.html
@@ -62,7 +62,7 @@ characters.
     </em>. </span><span class="copyright">Copyright © 1998 ISO. </span></p></div><div class="biblioentry"><a id="id-1.3.4.6.3.2.4.5"></a><p><span class="citetitle"><em class="citetitle">
       ISO/IEC 9899:1999 Programming languages - C
     </em>. </span><span class="copyright">Copyright © 1999 ISO. </span></p></div><div class="biblioentry"><a id="id-1.3.4.6.3.2.4.6"></a><p><span class="title"><em>
-	<a class="link" href="http://www.unix.org/version3/ieee_std.html" target="_top">
+	<a class="link" href="https://www.unix.org/version3/ieee_std.html" target="_top">
 	The Open Group Base Specifications, Issue 6 (IEEE Std. 1003.1-2004)
 	</a>
       </em>. </span><span class="copyright">Copyright © 1999 
@@ -748,4 +748,4 @@ java.util.Locale, java.util.ResourceBundle
  </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 9. 
   Containers
   
-</td></tr></table></div></body></html>
\ No newline at end of file
+</td></tr></table></div></body></html>
diff --git a/libstdc++-v3/doc/xml/manual/ctype.xml b/libstdc++-v3/doc/xml/manual/ctype.xml
index 55930c1751f..a1c580f94ad 100644
--- a/libstdc++-v3/doc/xml/manual/ctype.xml
+++ b/libstdc++-v3/doc/xml/manual/ctype.xml
@@ -168,7 +168,7 @@ characters.
   <biblioentry>
       <title>
 	<link xmlns:xlink="http://www.w3.org/1999/xlink"
-	      xlink:href="http://www.unix.org/version3/ieee_std.html">
+	      xlink:href="https://www.unix.org/version3/ieee_std.html">
 	The Open Group Base Specifications, Issue 6 (IEEE Std. 1003.1-2004)
 	</link>
       </title>