diff --git a/build.xml b/build.xml
index 9f23017..09eb0a2 100644
--- a/build.xml
+++ b/build.xml
@@ -63,7 +63,9 @@
       <fileset dir="${bundle.srcdest}"/>
     </copy>
     <copy todir="${bundle.tmp.prep.path}/${bundle.folder}" overwrite="true">
-      <fileset dir="${bundle.path}" defaultexcludes="yes"/>
+      <fileset dir="${bundle.path}" defaultexcludes="yes" excludes="
+        rubygems/**"
+      />
     </copy>
   </target>