Use latest version of ant

how do I get Install anywhere to use the latest version of ant ?


We keep getting the below error while running an installer built using IA on Linux.

/tmp/050335.tmp/build.xml:3: The following error occurred while executing this line:
jar:file:/bea01/bea/weblogic1213/wlserver_12.1.3/oracle_common/modules/org.apache.ant_1.9.2/lib/ant.jar!/org/apache/tools/ant/antlib.xml:37: Problem: failed to create task or type componentdef
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.

at org.apache.tools.ant.ProjectHelper.addLocationToBuildException(ProjectHelper.java:508)
at org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:434)
at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:281)
at org.apache.tools.ant.ComponentHelper.checkNamespace(ComponentHelper.java:790)