--- old/src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassFile.java	2018-06-21 20:20:06.137508821 -0700
+++ new/src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassFile.java	2018-06-21 20:20:05.345112796 -0700
@@ -115,7 +115,8 @@
         V52(52, 0),   // JDK 1.8: lambda, type annos, param names
         V53(53, 0),   // JDK 1.9: modules, indy string concat
         V54(54, 0),   // JDK 10
-        V55(55, 0);   // JDK 11: constant dynamic
+        V55(55, 0),   // JDK 11: constant dynamic
+        V56(56, 0);   // JDK 12
         Version(int major, int minor) {
             this.major = major;
             this.minor = minor;