diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c
index 6688ab3..d60431d 100644
--- a/src/backend/commands/vacuumlazy.c
+++ b/src/backend/commands/vacuumlazy.c
@@ -186,6 +186,11 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
 	BlockNumber new_rel_allvisible;
 	TransactionId new_frozen_xid;
 	MultiXactId new_min_multi;
+	PgStat_StatTabEntry *tabentry = NULL;
+	int64		dead_tuples = 0;
+	int64		new_dead_tuples = 0;
+
+
 
 	/* measure elapsed time iff autovacuum logging requires it */
 	if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
@@ -216,6 +221,16 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
 	vacrelstats->pages_removed = 0;
 	vacrelstats->lock_waiter_detected = false;
 
+	/*
+	 * Get the data in the table's hashtable entry.
+	 */
+	if (IsUnderPostmaster)
+	{
+		tabentry = pgstat_fetch_stat_tabentry(RelationGetRelid(onerel));
+		if (tabentry != NULL)
+			dead_tuples = tabentry->n_dead_tuples;
+	}
+
 	/* Open all indexes of the relation */
 	vac_open_indexes(onerel, RowExclusiveLock, &nindexes, &Irel);
 	vacrelstats->hasindex = (nindexes > 0);
@@ -296,10 +311,21 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt,
 						new_frozen_xid,
 						new_min_multi);
 
+	/* calculate the number of new dead tuples */
+	if (IsUnderPostmaster)
+	{
+		/* clear and get the new stats for calculating proper dead tuples */
+		pgstat_clear_snapshot();
+		tabentry = pgstat_fetch_stat_tabentry(RelationGetRelid(onerel));
+		if (tabentry != NULL)
+			new_dead_tuples = tabentry->n_dead_tuples - dead_tuples;
+	}
+
 	/* report results to the stats collector, too */
 	pgstat_report_vacuum(RelationGetRelid(onerel),
 						 onerel->rd_rel->relisshared,
-						 new_rel_tuples);
+						 new_rel_tuples,
+						 new_dead_tuples);
 
 	/* and log the action if appropriate */
 	if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
diff --git a/src/backend/postmaster/pgstat.c b/src/backend/postmaster/pgstat.c
index b5ce2f6..2434b1f 100644
--- a/src/backend/postmaster/pgstat.c
+++ b/src/backend/postmaster/pgstat.c
@@ -1317,7 +1317,8 @@ pgstat_report_autovac(Oid dboid)
  * ---------
  */
 void
-pgstat_report_vacuum(Oid tableoid, bool shared, PgStat_Counter tuples)
+pgstat_report_vacuum(Oid tableoid, bool shared, PgStat_Counter tuples,
+					 PgStat_Counter dead_tuples)
 {
 	PgStat_MsgVacuum msg;
 
@@ -1330,6 +1331,7 @@ pgstat_report_vacuum(Oid tableoid, bool shared, PgStat_Counter tuples)
 	msg.m_autovacuum = IsAutoVacuumWorkerProcess();
 	msg.m_vacuumtime = GetCurrentTimestamp();
 	msg.m_tuples = tuples;
+	msg.m_dead_tuples = dead_tuples;
 	pgstat_send(&msg, sizeof(msg));
 }
 
@@ -4800,8 +4802,7 @@ pgstat_recv_vacuum(PgStat_MsgVacuum *msg, int len)
 	tabentry = pgstat_get_tab_entry(dbentry, msg->m_tableoid, true);
 
 	tabentry->n_live_tuples = msg->m_tuples;
-	/* Resetting dead_tuples to 0 is an approximation ... */
-	tabentry->n_dead_tuples = 0;
+	tabentry->n_dead_tuples = msg->m_dead_tuples;
 
 	if (msg->m_autovacuum)
 	{
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index fb242e4..1d714a2 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -332,6 +332,7 @@ typedef struct PgStat_MsgVacuum
 	bool		m_autovacuum;
 	TimestampTz m_vacuumtime;
 	PgStat_Counter m_tuples;
+	PgStat_Counter m_dead_tuples;
 } PgStat_MsgVacuum;
 
 
@@ -773,7 +774,7 @@ extern void pgstat_reset_single_counter(Oid objectid, PgStat_Single_Reset_Type t
 
 extern void pgstat_report_autovac(Oid dboid);
 extern void pgstat_report_vacuum(Oid tableoid, bool shared,
-					 PgStat_Counter tuples);
+					 PgStat_Counter tuples, PgStat_Counter dead_tuples);
 extern void pgstat_report_analyze(Relation rel,
 					  PgStat_Counter livetuples, PgStat_Counter deadtuples);