--- a/jdk/src/share/classes/java/time/chrono/Ser.java	Fri Aug 30 11:43:57 2013 +0100
+++ b/jdk/src/share/classes/java/time/chrono/Ser.java	Wed Sep 04 15:18:54 2013 +0100
@@ -104,6 +104,7 @@
     static final byte HIJRAH_DATE_TYPE = 6;
     static final byte MINGUO_DATE_TYPE = 7;
     static final byte THAIBUDDHIST_DATE_TYPE = 8;
+    static final byte CHRONO_PERIOD_TYPE = 9;
 
     /** The type being serialized. */
     private byte type;
@@ -183,6 +184,9 @@
             case THAIBUDDHIST_DATE_TYPE:
                 ((ThaiBuddhistDate) object).writeExternal(out);
                 break;
+            case CHRONO_PERIOD_TYPE:
+                ((ChronoPeriodImpl) object).writeExternal(out);
+                break;
             default:
                 throw new InvalidClassException("Unknown serialized type");
         }
@@ -235,6 +239,7 @@
             case HIJRAH_DATE_TYPE: return HijrahDate.readExternal(in);
             case MINGUO_DATE_TYPE: return MinguoDate.readExternal(in);
             case THAIBUDDHIST_DATE_TYPE: return ThaiBuddhistDate.readExternal(in);
+            case CHRONO_PERIOD_TYPE: return ChronoPeriodImpl.readExternal(in);
             default: throw new StreamCorruptedException("Unknown serialized type");
         }
     }