diff --git a/docs/doxygen/other/reference_docs.dox b/docs/doxygen/other/reference_docs.dox
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--- a/docs/doxygen/other/reference_docs.dox
+++ b/docs/doxygen/other/reference_docs.dox
@@ -105,9 +105,10 @@ Google submitted KML (formerly Keyhole Markup Language) to the Open Geospatial C
 
 The C++ programming language is standardized by the International Organization for Standardization (ISO), with the latest standard version ratified and published by ISO in December 2017 as ISO/IEC 14882:2017 (informally known as C++17). The list of supported C++ standards (the highest available is automatically selected by the CMake script):
 <ul>
-      <li><strong>Draft C++20</strong>: Check the <a href="https://github.com/cplusplus/draft" target="_blank">C++ standard draft sources at GitHub</a>.</li>
-      <li><strong>C++17</strong>: The current ISO C++ standard is officially known as <em>ISO International Standard ISO/IEC 14882:2017 – Programming languages – C++</em>. You can get it from <a href="https://www.iso.org/standard/68564.html" target="_blank">ISO</a>, <a href="https://webstore.iec.ch/publication/62162" target="_blank">IEC</a> or <a href="https://webstore.ansi.org/Standards/ISO/ISOIEC148822017" target="_blank">ANSI</a>. The closest free working document available is <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/n4659.pdf" target="_blank">N4659</a>.</li>
-      <li><strong>C++14</strong>: The former ISO C++ standard was officially known as <em>ISO International Standard ISO/IEC 14882:2014 – Programming languages – C++</em>. You can get it from <a href="https://www.iso.org/standard/64029.html" target="_blank">ISO</a> or <a href="https://webstore.ansi.org/RecordDetail.aspx?sku=INCITS/ISO/IEC+14882:2014+(2016)" target="_blank">ANSI</a>. The closest free working document available is <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4296.pdf" target="_blank">N4296</a>.</li>
+      <li><strong>Draft C++23</strong>: Check the <a href="https://github.com/cplusplus/draft" target="_blank">C++ standard draft sources at GitHub</a>.</li>
+      <li><strong>C++20</strong>: The current ISO C++ standard is officially known as <em>ISO International Standard ISO/IEC 14882:2020(E) – Programming languages – C++</em>. You can get it from <a href="https://www.iso.org/standard/79358.html" target="_blank">ISO</a>, <a href="https://webstore.iec.ch/publication/68285" target="_blank">IEC</a> or <a href="https://webstore.ansi.org/Standards/ISO/ISOIEC148822020" target="_blank">ANSI</a>. The closest free working document available is <a href="https://github.com/cplusplus/draft/releases/download/n4868/n4868.pdf" target="_blank">N4868</a>.</li>
+      <li><strong>C++17</strong>: A former ISO C++ standard was officially known as <em>ISO International Standard ISO/IEC 14882:2017 – Programming languages – C++</em>. You can get it from <a href="https://www.iso.org/standard/68564.html" target="_blank">ISO</a>, <a href="https://webstore.iec.ch/publication/62162" target="_blank">IEC</a> or <a href="https://webstore.ansi.org/Standards/ISO/ISOIEC148822017" target="_blank">ANSI</a>. The closest free working document available is <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/n4659.pdf" target="_blank">N4659</a>.</li>
+      <li><strong>C++14</strong>: A former ISO C++ standard was officially known as <em>ISO International Standard ISO/IEC 14882:2014 – Programming languages – C++</em>. You can get it from <a href="https://www.iso.org/standard/64029.html" target="_blank">ISO</a> or <a href="https://webstore.ansi.org/RecordDetail.aspx?sku=INCITS/ISO/IEC+14882:2014+(2016)" target="_blank">ANSI</a>. The closest free working document available is <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4296.pdf" target="_blank">N4296</a>.</li>
       <li><strong>C++11</strong>: An older ISO C++ standard was ISO/IEC 14882:2011. You can get it from <a href="https://www.iso.org/standard/50372.html" target="_blank">ISO</a>. The closest free working document available is <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf" target="_blank">N3337</a>.</li>
 </ul>