diff --git a/templates/doc/data/annotation.html.ep b/templates/doc/data/annotation.html.ep
index 0fd87f0..6d64d1e 100644
--- a/templates/doc/data/annotation.html.ep
+++ b/templates/doc/data/annotation.html.ep
@@ -54,7 +54,7 @@
     <dt><abbr data-type="token" title="Part-of-Speech">p</abbr></dt>
     <dd>Part-of-speech information is written in capital letters and is based on STTS</dd>
     <dt><abbr data-type="token" title="Constituency">c</abbr></dt>
-    <dd>Constituency information follows the annotations of the <%= ext_link_to 'negr@ corpus', 'http://www.coli.uni-saarland.de/projects/sfb378/negra-corpus/negra-corpus.html' %>.</dd>
+    <dd>Constituency information follows the annotations of the <%= ext_link_to 'negr@ corpus', 'https://www.coli.uni-saarland.de/projects/sfb378/1999-2001/projects/NEGRA-en.html' %>.</dd>
     <dt><abbr data-type="token" title="Named Entity">ne</abbr></dt>
     <dd>Contains named entities like <code>I-PER</code>, <code>I-ORG</code> etc.</dd>
     <dt><abbr data-type="token" title="Named Entity">ne_hgc_175m_600</abbr></dt>