diff --git a/chain/block_receipt_tracker.go b/chain/block_receipt_tracker.go
new file mode 100644
index 000000000..f182fd180
--- /dev/null
+++ b/chain/block_receipt_tracker.go
@@ -0,0 +1,71 @@
+package chain
+
+import (
+	"sort"
+	"sync"
+	"time"
+
+	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/hashicorp/golang-lru"
+	peer "github.com/libp2p/go-libp2p-core/peer"
+)
+
+type blockReceiptTracker struct {
+	lk sync.Mutex
+
+	// using an LRU cache because i don't want to handle all the edge cases for
+	// manual cleanup and maintenance of a fixed size set
+	cache *lru.Cache
+}
+
+type peerSet struct {
+	peers map[peer.ID]time.Time
+}
+
+func newBlockReceiptTracker() *blockReceiptTracker {
+	c, _ := lru.New(512)
+	return &blockReceiptTracker{
+		cache: c,
+	}
+}
+
+func (brt *blockReceiptTracker) Add(p peer.ID, ts *types.TipSet) {
+	brt.lk.Lock()
+	defer brt.lk.Unlock()
+
+	val, ok := brt.cache.Get(ts.Key())
+	if !ok {
+		pset := &peerSet{
+			peers: map[peer.ID]time.Time{
+				p: time.Now(),
+			},
+		}
+		brt.cache.Add(ts.Key(), pset)
+		return
+	}
+
+	val.(*peerSet).peers[p] = time.Now()
+}
+
+func (brt *blockReceiptTracker) GetPeers(ts *types.TipSet) []peer.ID {
+	brt.lk.Lock()
+	defer brt.lk.Unlock()
+
+	val, ok := brt.cache.Get(ts.Key())
+	if !ok {
+		return nil
+	}
+
+	ps := val.(*peerSet)
+
+	out := make([]peer.ID, 0, len(ps.peers))
+	for p := range ps.peers {
+		out = append(out, p)
+	}
+
+	sort.Slice(out, func(i, j int) bool {
+		return ps.peers[out[i]].Before(ps.peers[out[j]])
+	})
+
+	return out
+}
diff --git a/chain/sub/incoming.go b/chain/sub/incoming.go
index 681165f47..79dc29b80 100644
--- a/chain/sub/incoming.go
+++ b/chain/sub/incoming.go
@@ -56,12 +56,12 @@ func HandleIncomingBlocks(ctx context.Context, bsub *pubsub.Subscription, s *cha
 				log.Warnf("Received block with large delay %d from miner %s", delay, blk.Header.Miner)
 			}
 
-			if s.InformNewBlock(msg.GetFrom(), &types.FullBlock{
+			if s.InformNewBlock(msg.ReceivedFrom, &types.FullBlock{
 				Header:        blk.Header,
 				BlsMessages:   bmsgs,
 				SecpkMessages: smsgs,
 			}) {
-				cmgr.TagPeer(msg.ReceivedFrom, "blkprop", 20)
+				cmgr.TagPeer(msg.ReceivedFrom, "blkprop", 5)
 			}
 		}()
 	}
diff --git a/chain/sync.go b/chain/sync.go
index b8018c793..3c80b3275 100644
--- a/chain/sync.go
+++ b/chain/sync.go
@@ -18,6 +18,7 @@ import (
 	hamt "github.com/ipfs/go-hamt-ipld"
 	bstore "github.com/ipfs/go-ipfs-blockstore"
 	logging "github.com/ipfs/go-log"
+	"github.com/libp2p/go-libp2p-core/connmgr"
 	"github.com/libp2p/go-libp2p-core/peer"
 	cbg "github.com/whyrusleeping/cbor-gen"
 	"github.com/whyrusleeping/pubsub"
@@ -42,8 +43,6 @@ var log = logging.Logger("chain")
 var LocalIncoming = "incoming"
 
 type Syncer struct {
-	// The heaviest known tipset in the network.
-
 	// The interface for accessing and putting tipsets into local storage
 	store *store.ChainStore
 
@@ -63,10 +62,14 @@ type Syncer struct {
 
 	syncmgr *SyncManager
 
+	connmgr connmgr.ConnManager
+
 	incoming *pubsub.PubSub
+
+	receiptTracker *blockReceiptTracker
 }
 
-func NewSyncer(sm *stmgr.StateManager, bsync *blocksync.BlockSync, self peer.ID) (*Syncer, error) {
+func NewSyncer(sm *stmgr.StateManager, bsync *blocksync.BlockSync, connmgr connmgr.ConnManager, self peer.ID) (*Syncer, error) {
 	gen, err := sm.ChainStore().GetGenesis()
 	if err != nil {
 		return nil, err
@@ -78,12 +81,14 @@ func NewSyncer(sm *stmgr.StateManager, bsync *blocksync.BlockSync, self peer.ID)
 	}
 
 	s := &Syncer{
-		bad:     NewBadBlockCache(),
-		Genesis: gent,
-		Bsync:   bsync,
-		store:   sm.ChainStore(),
-		sm:      sm,
-		self:    self,
+		bad:            NewBadBlockCache(),
+		Genesis:        gent,
+		Bsync:          bsync,
+		store:          sm.ChainStore(),
+		sm:             sm,
+		self:           self,
+		receiptTracker: newBlockReceiptTracker(),
+		connmgr:        connmgr,
 
 		incoming: pubsub.New(50),
 	}
@@ -401,6 +406,15 @@ func (syncer *Syncer) Sync(ctx context.Context, maybeHead *types.TipSet) error {
 		return xerrors.Errorf("failed to put synced tipset to chainstore: %w", err)
 	}
 
+	peers := syncer.receiptTracker.GetPeers(maybeHead)
+	if len(peers) > 0 {
+		syncer.connmgr.TagPeer(peers[0], "new-block", 40)
+
+		for _, p := range peers[1:] {
+			syncer.connmgr.TagPeer(p, "new-block", 25)
+		}
+	}
+
 	return nil
 }
 
diff --git a/go.sum b/go.sum
index f7e70bd83..6cd2e9703 100644
--- a/go.sum
+++ b/go.sum
@@ -7,7 +7,6 @@ github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9 h1:HD8gA2tkBy
 github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/GeertJohan/go.incremental v1.0.0 h1:7AH+pY1XUgQE4Y1HcXYaMqAI0m9yrFqo/jt0CW30vsg=
 github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
 github.com/GeertJohan/go.rice v1.0.0 h1:KkI6O9uMaQU3VEKaj01ulavtF7o1fWT7+pk/4voiMLQ=
 github.com/GeertJohan/go.rice v1.0.0/go.mod h1:eH6gbSOAUv07dQuZVnBmoDP8mgsM1rtixis4Tib9if0=
@@ -21,7 +20,6 @@ github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d/go.mod h1:3eOhrU
 github.com/Stebalien/go-bitfield v0.0.1 h1:X3kbSSPUaJK60wV2hjOPZwmpljr6VGCqdq4cBLhbQBo=
 github.com/Stebalien/go-bitfield v0.0.1/go.mod h1:GNjFpasyUVkHMsfEOk8EFLJ9syQ6SI+XWrX9Wf2XH0s=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
-github.com/akavel/rsrc v0.8.0 h1:zjWn7ukO9Kc5Q62DOJCcxGpXC18RawVtYAGdz2aLlfw=
 github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -269,7 +267,6 @@ github.com/jbenet/goprocess v0.0.0-20160826012719-b497e2f366b8/go.mod h1:Ly/wlsj
 github.com/jbenet/goprocess v0.1.3 h1:YKyIEECS/XvcfHtBzxtjBBbWK+MbvA6dG8ASiqwvr10=
 github.com/jbenet/goprocess v0.1.3/go.mod h1:5yspPrukOVuOLORacaBi858NqyClJPQxYZlqdZVfqY4=
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
-github.com/jessevdk/go-flags v1.4.0 h1:4IU2WS7AumrZ/40jfhf4QVDMsQwqA7VEHozFRrGARJA=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
 github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
@@ -532,7 +529,6 @@ github.com/multiformats/go-multistream v0.1.0/go.mod h1:fJTiDfXJVmItycydCnNx4+wS
 github.com/multiformats/go-varint v0.0.1 h1:TR/0rdQtnNxuN2IhiB639xC3tWM4IUi7DkTBVTdGW/M=
 github.com/multiformats/go-varint v0.0.1/go.mod h1:3Ls8CIEsrijN6+B7PbrXRPxHRPuXSrVKRY101jdMZYE=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
-github.com/nkovacs/streamquote v0.0.0-20170412213628-49af9bddb229 h1:E2B8qYyeSgv5MXpmzZXRNp8IAQ4vjxIjhpAf5hv/tAg=
 github.com/nkovacs/streamquote v0.0.0-20170412213628-49af9bddb229/go.mod h1:0aYXnNPJ8l7uZxf45rWW1a/uME32OF0rhiYGNQ2oF2E=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@@ -607,9 +603,7 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/syndtr/goleveldb v1.0.0/go.mod h1:ZVVdQEZoIme9iO1Ch2Jdy24qqXrMMOU6lpPAyBWyWuQ=
 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
 github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
-github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
-github.com/valyala/fasttemplate v1.0.1 h1:tY9CJiPnMXf1ERmG2EyK7gNUd+c6RKGD0IfU8WdUSz8=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
 github.com/warpfork/go-wish v0.0.0-20180510122957-5ad1f5abf436/go.mod h1:x6AKhvSSexNrVSrViXSHUEbICjmGXhtgABaHIySUSGw=
 github.com/warpfork/go-wish v0.0.0-20190328234359-8b3e70f8e830 h1:8kxMKmKzXXL4Ru1nyhvdms/JjWt+3YLpvRb/bAjO/y0=
diff --git a/node/modules/chain.go b/node/modules/chain.go
index ed5a5f4a1..bc0ff3ce2 100644
--- a/node/modules/chain.go
+++ b/node/modules/chain.go
@@ -11,7 +11,6 @@ import (
 	"github.com/ipfs/go-datastore"
 	blockstore "github.com/ipfs/go-ipfs-blockstore"
 	"github.com/libp2p/go-libp2p-core/host"
-	peer "github.com/libp2p/go-libp2p-core/peer"
 	"github.com/libp2p/go-libp2p-core/routing"
 	pubsub "github.com/libp2p/go-libp2p-pubsub"
 	"go.uber.org/fx"
@@ -127,8 +126,8 @@ func SetGenesis(cs *store.ChainStore, g Genesis) error {
 	return cs.SetGenesis(genesis)
 }
 
-func NewSyncer(lc fx.Lifecycle, sm *stmgr.StateManager, bsync *blocksync.BlockSync, self peer.ID) (*chain.Syncer, error) {
-	syncer, err := chain.NewSyncer(sm, bsync, self)
+func NewSyncer(lc fx.Lifecycle, sm *stmgr.StateManager, bsync *blocksync.BlockSync, h host.Host) (*chain.Syncer, error) {
+	syncer, err := chain.NewSyncer(sm, bsync, h.ConnManager(), h.ID())
 	if err != nil {
 		return nil, err
 	}