--- misc/build/rhino1_7R3/build.properties
+++ misc/build/rhino1_7R3/build.properties
@@ -53,8 +53,8 @@
 
 # compilation settings
 debug: on
-target-jvm: 1.5
-source-level: 1.5
+target-jvm: 1.8
+source-level: 1.8
 
 # jar generation settings
 jar-compression: true