--- a/build.xml
+++ b/build.xml
@@ -19,8 +19,8 @@
 -->
 <project basedir="." default="build" name="PreservationIdentifier">
     <property name="debuglevel" value="source,lines,vars" />
-    <property name="target" value="1.5" />
-    <property name="source" value="1.5" />
+    <property name="target" value="1.7" />
+    <property name="source" value="1.7" />
     <path id="PreservationIdentifier.classpath">
         <pathelement location="WEB-INF/classes" />
         <fileset dir="WEB-INF/lib" />