diff --git a/WHATSNEW b/WHATSNEW
index 7acc9f707..5c7b55b3c 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -6,6 +6,11 @@ Changes that could break older environments:
 
 * Zip.setWhenempty() has changed its signature.
 
+Other changes:
+--------------
+
+* Ant now uses JAXP 1.1
+
 Fixed bugs:
 -----------
 
diff --git a/build.xml b/build.xml
index 995dabd4f..0d6c0e41e 100644
--- a/build.xml
+++ b/build.xml
@@ -239,12 +239,15 @@
          basedir="${build.classes}" 
          manifest="${manifest}">
       <exclude name="org/apache/tools/ant/taskdefs/optional/**" />
+      <fileset dir="${build.classes}" 
+               includes="org/apache/tools/ant/taskdefs/optional/TraXLiaison.class" />
     </jar>
 
     <jar jarfile="${build.lib}/optional.jar" 
          basedir="${build.classes}" 
          manifest="${manifest}">
       <include name="org/apache/tools/ant/taskdefs/optional/**" />
+      <exclude name="org/apache/tools/ant/taskdefs/optional/TraXLiaison.class" />
     </jar>
 
   </target>