src/java.base/share/classes/com/sun/java/util/jar/pack/Constants.java

@@ -48,10 +48,11 @@
         1.8 to 1.8.X 52,0
         1.9 to 1.9.X 53,0
         1.10 to 1.10.X 54,0
         1.11 to 1.11.X 55,0
         1.12 to 1.12.X 56,0
+        1.13 to 1.13.X 57,0
     */
 
     public static final Package.Version JAVA_MIN_CLASS_VERSION =
             Package.Version.of(45, 03);
 

@@ -77,10 +78,13 @@
             Package.Version.of(55, 00);
 
     public static final Package.Version JAVA12_MAX_CLASS_VERSION =
             Package.Version.of(56, 00);
 
+    public static final Package.Version JAVA13_MAX_CLASS_VERSION =
+            Package.Version.of(57, 00);
+
     public static final int JAVA_PACKAGE_MAGIC = 0xCAFED00D;
 
     public static final Package.Version JAVA5_PACKAGE_VERSION =
             Package.Version.of(150, 7);
 

@@ -93,11 +97,11 @@
     public static final Package.Version JAVA8_PACKAGE_VERSION =
             Package.Version.of(171, 0);
 
     // upper limit, should point to the latest class version
     public static final Package.Version JAVA_MAX_CLASS_VERSION =
-            JAVA12_MAX_CLASS_VERSION;
+            JAVA13_MAX_CLASS_VERSION;
 
     // upper limit should point to the latest package version, for version info!.
     public static final Package.Version MAX_PACKAGE_VERSION =
             JAVA7_PACKAGE_VERSION;