--- old/make/common/SetupJavaCompilers.gmk	2017-01-25 18:02:28.935118958 -0800
+++ new/make/common/SetupJavaCompilers.gmk	2017-01-25 18:02:28.843118954 -0800
@@ -69,7 +69,7 @@
 $(eval $(call SetupJavaCompiler,GENERATE_JDKBYTECODE, \
     JVM := $(JAVA_JAVAC), \
     JAVAC := $(NEW_JAVAC), \
-    FLAGS := -source 9 -target 9 \
+    FLAGS := -source 10 -target 10 \
         -encoding ascii -XDignore.symbol.file=true $(JAVAC_WARNINGS), \
     SERVER_DIR := $(SJAVAC_SERVER_DIR), \
     SERVER_JVM := $(SJAVAC_SERVER_JAVA)))
@@ -79,7 +79,7 @@
 $(eval $(call SetupJavaCompiler,GENERATE_JDKBYTECODE_NOWARNINGS, \
     JVM := $(JAVA_JAVAC), \
     JAVAC := $(NEW_JAVAC), \
-    FLAGS := -source 9 -target 9 \
+    FLAGS := -source 10 -target 10 \
         -encoding ascii -XDignore.symbol.file=true $(DISABLE_WARNINGS), \
     SERVER_DIR := $(SJAVAC_SERVER_DIR), \
     SERVER_JVM := $(SJAVAC_SERVER_JAVA)))