Document requirements.
diff --git a/org.jacoco.doc/docroot/doc/ant.html b/org.jacoco.doc/docroot/doc/ant.html
index a9b4eb9..88c7967 100644
--- a/org.jacoco.doc/docroot/doc/ant.html
+++ b/org.jacoco.doc/docroot/doc/ant.html
@@ -18,7 +18,17 @@
<p>
JaCoCo comes with Ant tasks to launch Java programs with execution recording
- and for creating coverage reports from the recorded data. All tasks are
+ and for creating coverage reports from the recorded data. The JaCoCo Ant tasks
+ require
+</p>
+
+<ul>
+ <li>Ant 1.7.0 or higher and</li>
+ <li>Java 1.5 or higher (for both, the Ant runner and the test executor).</li>
+</ul>
+
+
+<p>All tasks are
defined in <code>jacocoant.jar</code> and can be included in your Ant scripts
with the usual <code>taskdef</code> declaration:
</p>