diff --git a/index.html b/index.html
index bf228ff..b0eb7af 100644
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@@ -70,7 +70,7 @@ $(function() {
 <p><img src="https://github.com/OpenCoin/opencoin-issuer-cpp/actions/workflows/cmake.yaml/badge.svg" alt="build" style="pointer-events: none;" class="inline"/> <a href="https://github.com/OpenCoin/opencoin-issuer-cpp/actions/workflows/doxygen-gh-pages.yml"><img src="https://github.com/OpenCoin/opencoin-issuer-cpp/actions/workflows/doxygen-gh-pages.yml/badge.svg" alt="Documentation" style="pointer-events: none;" class="inline"/></a></p>
 <h1><a class="anchor" id="autotoc_md0"></a>
 opencoin issuer</h1>
-<p>this is a C++ implementation of the <a href="https://opencoin.org/0.4/OpenCoin.html">opencoin protocol</a> done as mapping to some kind of REST interface.</p>
+<p>this is a C++ implementation of the <a href="https://opencoin.org/OpenCoin.html">opencoin protocol</a> done as mapping to some kind of REST interface.</p>
 <p>As all issuer related interactions of the protocol follows a request/response mechanism we are able to map all of them to Http-Requests.</p>
 <p>We decided to use POST-Requests in all cases, as the protocol uses JSON-formatted messages for requests.</p>
 <p>The following table gives an overview of the mapping of requests to URLs:</p>