diff -r 18e6f83e4a09 -r 312aa8b92ea2 etc/settings
--- a/etc/settings	Sun Jan 15 16:30:49 2017 +0100
+++ b/etc/settings	Sun Jan 15 16:42:37 2017 +0100
@@ -12,7 +12,7 @@
 ### Isabelle/Scala
 ###
 
-ISABELLE_SCALAC_OPTIONS="-encoding UTF-8 -nowarn -target:jvm-1.7 -Xmax-classfile-name 130"
+ISABELLE_SCALAC_OPTIONS="-encoding UTF-8 -nowarn -target:jvm-1.8 -Xmax-classfile-name 130"
 
 ISABELLE_JAVA_SYSTEM_OPTIONS="-server -Dfile.encoding=UTF-8 -Disabelle.threads=0"