diff --git a/doc/README.dissector b/doc/README.dissector
index 648ba3293a..9160c1de53 100644
--- a/doc/README.dissector
+++ b/doc/README.dissector
@@ -1830,6 +1830,13 @@ encodings that are currently supported are:
     ENC_TIME_MSEC_NTP - 4-8 bytes, representing a count of milliseconds since
         the NTP epoch. (I.e., milliseconds since the NTP epoch.)
 
+    ENC_MIP6 - 8 bytes; the first 48 bits are seconds since the UN*X epoch
+        and the remaining 16 bits indicate the number of 1/65536's of a second
+        since that second.
+
+    ENC_TIME_CLASSIC_MAC_OS_SECS - 4-8 bytes, representing a count of seconds
+        since January 1, 1904, 00:00:00 UTC.
+
 For FT_RELATIVE_TIME fields, the encoding specifies the form in which
 the time stamp is specified, as well as its byte order. The time stamp
 encodings that are currently supported are:
diff --git a/epan/proto.h b/epan/proto.h
index 5f1f045d38..327c3304c0 100644
--- a/epan/proto.h
+++ b/epan/proto.h
@@ -577,6 +577,13 @@ void proto_report_dissector_bug(const char *format, ...)
  *  ENC_TIME_MSEC_NTP - 4-8 bytes, representing a count of milliseconds since
  *  the NTP epoch.  (I.e., milliseconds since the NTP epoch.)
  *
+ *  ENC_MIP6 - 8 bytes; the first 48 bits are seconds since the UN*X epoch
+ *  and the remaining 16 bits indicate the number of 1/65536's of a second
+ *  since that second.
+ *
+ *  ENC_TIME_CLASSIC_MAC_OS_SECS - 4-8 bytes, representing a count of seconds
+ *  since January 1, 1904, 00:00:00 UTC.
+ *
  * The backwards-compatibility names are defined as hex numbers so that
  * the script to generate init.lua will add them as global variables,
  * along with the new names.