--- old/make/jprt.properties	2013-12-19 13:14:13.733487282 +0100
+++ new/make/jprt.properties	2013-12-19 13:14:13.641483561 +0100
@@ -26,7 +26,7 @@
 # Properties for jprt
 
 # Locked down to jdk8
-jprt.tools.default.release=jdk8
+jprt.tools.default.release=jdk9
 
 # Unix toolkit to use for building on windows
 jprt.windows.jdk8.build.unix.toolkit=cygwin