diff --git a/.changelog/2855.feature.md b/.changelog/2855.feature.md
new file mode 100644
index 00000000000..381499e949f
--- /dev/null
+++ b/.changelog/2855.feature.md
@@ -0,0 +1,10 @@
+go/consensus/tendermint: Expose new config options added in Tendermint 0.33
+
+Tendermint 0.33 added the concept of unconditional P2P peers. Support for
+setting the unconditional peers via `tendermint.p2p.unconditional_peer_ids`
+configuration flag is added. On sentry node, upstream nodes will automatically
+be set as unconditional peers.
+
+Tendermint 0.33 added support for setting maximum re-dial period when
+dialing persistent peers. This adds support for setting the period via
+`tendermint.p2p.persistent_peers_max_dial_period` flag.
diff --git a/go/consensus/tendermint/tendermint.go b/go/consensus/tendermint/tendermint.go
index 653b3f6d6e8..8964976cda6 100644
--- a/go/consensus/tendermint/tendermint.go
+++ b/go/consensus/tendermint/tendermint.go
@@ -82,6 +82,8 @@ const (
 
 	// CfgP2PPersistentPeer configures tendermint's persistent peer(s).
 	CfgP2PPersistentPeer = "tendermint.p2p.persistent_peer"
+	// CfgP2PPersistenPeersMaxDialPeriod configures the tendermint's peristent peer max dial period.
+	CfgP2PPersistenPeersMaxDialPeriod = "tendermint.p2p.persistent_peers_max_dial_period"
 	// CfgP2PDisablePeerExchange disables tendermint's peer-exchange (Pex) reactor.
 	CfgP2PDisablePeerExchange = "tendermint.p2p.disable_peer_exchange"
 	// CfgP2PSeeds configures tendermint's seed node(s).
@@ -96,6 +98,8 @@ const (
 	CfgP2PSendRate = "tendermint.p2p.send_rate"
 	// CfgP2PRecvRate is the rate at which packets can be received, in bytes/second.
 	CfgP2PRecvRate = "tendermint.p2p.recv_rate"
+	// CfgP2PUnconditionalPeerIDs configures tendermint's unconditional peer(s).
+	CfgP2PUnconditionalPeerIDs = "tendermint.p2p.unconditional_peer_ids"
 
 	cfgLogDebug = "tendermint.log.debug"
 
@@ -960,6 +964,12 @@ func (t *tendermintService) lazyInit() error {
 	// Since persistent peers is expected to be in comma-delimited ID@host:port format,
 	// lowercasing the whole string is ok.
 	tenderConfig.P2P.PersistentPeers = strings.ToLower(strings.Join(viper.GetStringSlice(CfgP2PPersistentPeer), ","))
+	tenderConfig.P2P.PersistentPeersMaxDialPeriod = viper.GetDuration(CfgP2PPersistenPeersMaxDialPeriod)
+	// Unconditional peer IDs need to be lowercase as p2p/transport.go:MultiplexTransport.upgrade()
+	// uses a case sensitive string comparision to validate public keys.
+	// Since persistent peers is expected to be in comma-delimited ID format,
+	// lowercasing the whole string is ok.
+	tenderConfig.P2P.UnconditionalPeerIDs = strings.ToLower(strings.Join(viper.GetStringSlice(CfgP2PUnconditionalPeerIDs), ","))
 	tenderConfig.P2P.SeedMode = viper.GetBool(CfgP2PSeedMode)
 	// Seed Ids need to be lowercase as p2p/transport.go:MultiplexTransport.upgrade()
 	// uses a case sensitive string comparision to validate public keys.
@@ -974,9 +984,8 @@ func (t *tendermintService) lazyInit() error {
 	if len(sentryUpstreamAddrs) > 0 {
 		t.Logger.Info("Acting as a tendermint sentry", "addrs", sentryUpstreamAddrs)
 
-		// Append sentry addresses to persistent peers.
-		tenderConfig.P2P.PersistentPeers = tenderConfig.P2P.PersistentPeers + "," +
-			strings.ToLower(strings.Join(sentryUpstreamAddrs, ","))
+		// Append upstream addresses to persistent, private and unconditional peers.
+		tenderConfig.P2P.PersistentPeers += "," + strings.ToLower(strings.Join(sentryUpstreamAddrs, ","))
 
 		var sentryUpstreamIDs []string
 		for _, addr := range sentryUpstreamAddrs {
@@ -987,12 +996,12 @@ func (t *tendermintService) lazyInit() error {
 			sentryUpstreamIDs = append(sentryUpstreamIDs, parts[0])
 		}
 
-		// Convert persistent peer IDs to lowercase (like other IDs) since
+		// Convert upstream node IDs to lowercase (like other IDs) since
 		// Tendermint stores them in a map and uses a case sensitive string
 		// comparison to check ID equality.
-		tenderConfig.P2P.PrivatePeerIDs = strings.ToLower(strings.Join(sentryUpstreamIDs, ","))
-
-		// XXX: tendermint v0.33 adds: `unconditional_peer_ids` which should also be set here.
+		sentryUpstreamIDsStr := strings.ToLower(strings.Join(sentryUpstreamIDs, ","))
+		tenderConfig.P2P.PrivatePeerIDs += "," + sentryUpstreamIDsStr
+		tenderConfig.P2P.UnconditionalPeerIDs += "," + sentryUpstreamIDsStr
 	}
 
 	if !tenderConfig.P2P.PexReactor {
@@ -1377,8 +1386,10 @@ func init() {
 	Flags.Uint64(cfgABCIPruneNumKept, 3600, "ABCI state versions kept (when applicable)")
 	Flags.StringSlice(CfgSentryUpstreamAddress, []string{}, "Tendermint nodes for which we act as sentry of the form ID@ip:port")
 	Flags.StringSlice(CfgP2PPersistentPeer, []string{}, "Tendermint persistent peer(s) of the form ID@ip:port")
+	Flags.StringSlice(CfgP2PUnconditionalPeerIDs, []string{}, "Tendermint unconditional peer IDs")
 	Flags.Bool(CfgP2PDisablePeerExchange, false, "Disable Tendermint's peer-exchange reactor")
 	Flags.Bool(CfgP2PSeedMode, false, "run the tendermint node in seed mode")
+	Flags.Duration(CfgP2PPersistenPeersMaxDialPeriod, 0*time.Second, "Tendermint max timeout when redialing a persistent peer (default: unlimited)")
 	Flags.Int(CfgP2PMaxNumInboundPeers, 40, "Max number of inbound peers")
 	Flags.Int(CfgP2PMaxNumOutboundPeers, 20, "Max number of outbound peers (excluding persistent peers)")
 	Flags.Int64(CfgP2PSendRate, 5120000, "Rate at which packets can be sent (bytes/sec)")