diff --git a/build.xml b/build.xml
index 1c8953f..a3dcb5e 100644
--- a/build.xml
+++ b/build.xml
@@ -122,12 +122,10 @@
     <weave inputjar="${basedir}/${deploy.dir}/${app.name}-pro.jar"
            outputjar="${basedir}/${deploy.dir}/${app.name}-retro-pro.jar"/>
     <!-- now combine the retroweaved jar file with the retroweaver runtime -->
-    <unjar src="${deploy.dir}/${app.name}-retro-pro.jar"
-           dest="${deploy.dir}/rptmp"/>
     <unjar src="${deploy.dir}/lib/retroweaver-rt-1.2.2.jar"
            dest="${deploy.dir}/rptmp"/>
     <jar destfile="${deploy.dir}/${app.name}-retro-pro.jar"
-         manifest="lib/manifest.mf" basedir="${deploy.dir}/rptmp"/>
+         manifest="lib/manifest.mf" basedir="${deploy.dir}/rptmp" update="true"/>
     <delete dir="${deploy.dir}/rptmp"/>
   </target>