diff --git a/man/man1m/zdb.1m b/man/man1m/zdb.1m
index 4f67ff8e88c0..b4796e19c37c 100644
--- a/man/man1m/zdb.1m
+++ b/man/man1m/zdb.1m
@@ -133,6 +133,12 @@ compression ratio (compress), inflation due to the zfs copies property
 If specified twice, display a histogram of deduplication statistics, showing
 the allocated (physically present on disk) and referenced (logically
 referenced in the pool) block counts and sizes by reference count.
+.sp
+If specified a third time, display the statistics independently for each deduplication table.
+.sp
+If specified a fourth time, dump the contents of the deduplication tables describing duplicate blocks.
+.sp
+If specified a fifth time, also dump the contents of the deduplication tables describing unique blocks.
 .RE
 
 .sp
diff --git a/man/man1m/zpool.1m b/man/man1m/zpool.1m
index 061f4c40d360..2dfc04f4420a 100644
--- a/man/man1m/zpool.1m
+++ b/man/man1m/zpool.1m
@@ -761,6 +761,19 @@ such that it is available even if the pool becomes faulted.  An administrator
 can provide additional information about a pool using this property.
 .RE
 
+.sp
+.ne 2
+.na
+\fB\fBdedupditto\fR=\fB\fInumber\fR\fR
+.ad
+.sp .6
+.RS 4n
+Threshold for the number of block ditto copies. If the reference count for a
+deduplicated block increases above this number, a new ditto copy of this block
+is automatically stored. The default setting is 0 which causes no ditto copies
+to be created for deduplicated blocks. The miniumum legal nonzero setting is 100.
+.RE
+
 .sp
 .ne 2
 .na
@@ -1792,6 +1805,29 @@ Displays verbose data error information, printing out a complete list of all
 data errors since the last complete pool scrub.
 .RE
 
+.sp
+.ne 2
+.na
+\fB\fB-D\fR\fR
+.ad
+.RS 6n
+Display a histogram of deduplication statistics, showing the allocated (physically present on disk) and
+referenced (logically referenced in the pool) block counts and sizes by reference count.
+.RE
+
+.sp
+.ne 2
+.na
+\fB\fB-T\fR \fBu\fR | \fBd\fR\fR
+.ad
+.RS 12n
+Display a time stamp.
+.sp
+Specify \fBu\fR for a printed representation of the internal representation of
+time. See \fBtime\fR(2). Specify \fBd\fR for standard date format. See
+\fBdate\fR(1).
+.RE
+
 .RE
 
 .sp