diff -ur yuicompressor-2.4.8.orig/build.xml yuicompressor-2.4.8/build.xml
--- yuicompressor-2.4.8.orig/build.xml	2020-05-06 00:06:12.442911120 +0200
+++ yuicompressor-2.4.8/build.xml	2020-05-06 00:11:53.587321510 +0200
@@ -33,8 +33,8 @@
                deprecation="off"
                debug="on"
                includeantruntime="false"
-	           target="1.5"
-               source="1.5">
+               target="1.6"
+               source="1.6">
             <classpath>
                 <pathelement location="${lib.dir}/jargs.jar"/>
             </classpath>