diff --git a/build.xml b/build.xml
index 56be5f1..54a5862 100644
--- a/build.xml
+++ b/build.xml
@@ -296,6 +296,7 @@
              nodeprecatedlist="false"
              nodeprecated="false">
             <classpath refid="main.class.path"/>
+            <arg value="-notimestamp"/>
             <packageset dir="${src}" defaultexcludes="yes" />
         </javadoc>
         <copy todir="${javadoc}">
