diff --git a/stores/hostdb.go b/stores/hostdb.go
index 5b2636d83..37aa18ee8 100644
--- a/stores/hostdb.go
+++ b/stores/hostdb.go
@@ -699,10 +699,6 @@ func (ss *SQLStore) RecordHostScans(ctx context.Context, scans []hostdb.HostScan
 		return nil // nothing to do
 	}
 
-	// Only allow for applying one batch of interactions at a time.
-	ss.interactionsMu.Lock()
-	defer ss.interactionsMu.Unlock()
-
 	// Get keys from input.
 	keyMap := make(map[publicKey]struct{})
 	var hks []publicKey
@@ -824,10 +820,6 @@ func (ss *SQLStore) RecordPriceTables(ctx context.Context, priceTableUpdate []ho
 		return nil // nothing to do
 	}
 
-	// Only allow for applying one batch of interactions at a time.
-	ss.interactionsMu.Lock()
-	defer ss.interactionsMu.Unlock()
-
 	// Get keys from input.
 	keyMap := make(map[publicKey]struct{})
 	var hks []publicKey
diff --git a/stores/metadata.go b/stores/metadata.go
index f956beede..77ae888f8 100644
--- a/stores/metadata.go
+++ b/stores/metadata.go
@@ -1298,10 +1298,6 @@ func (s *SQLStore) RecordContractSpending(ctx context.Context, records []api.Con
 		return nil // nothing to do
 	}
 
-	// Only allow for applying one batch of spending records at a time.
-	s.spendingMu.Lock()
-	defer s.spendingMu.Unlock()
-
 	squashedRecords := make(map[types.FileContractID]api.ContractSpending)
 	latestValues := make(map[types.FileContractID]struct {
 		revision          uint64
@@ -1648,9 +1644,6 @@ func (s *SQLStore) DeleteHostSector(ctx context.Context, hk types.PublicKey, roo
 }
 
 func (s *SQLStore) UpdateObject(ctx context.Context, bucket, path, contractSet, eTag, mimeType string, o object.Object) error {
-	s.objectsMu.Lock()
-	defer s.objectsMu.Unlock()
-
 	// Sanity check input.
 	for _, s := range o.Slabs {
 		for i, shard := range s.Shards {
@@ -1771,9 +1764,6 @@ func (s *SQLStore) Slab(ctx context.Context, key object.EncryptionKey) (object.S
 }
 
 func (ss *SQLStore) UpdateSlab(ctx context.Context, s object.Slab, contractSet string) error {
-	ss.objectsMu.Lock()
-	defer ss.objectsMu.Unlock()
-
 	// sanity check the shards don't contain an empty root
 	for _, s := range s.Shards {
 		if s.Root == (types.Hash256{}) {
@@ -1923,9 +1913,6 @@ LIMIT ?
 `, now.Unix(), refreshHealthBatchSize)
 		var rowsAffected int64
 		err := s.retryTransaction(func(tx *gorm.DB) error {
-			s.objectsMu.Lock()
-			defer s.objectsMu.Unlock()
-
 			// create temp table from the health query since we will reuse it
 			if err := tx.Exec("DROP TABLE IF EXISTS src").Error; err != nil {
 				return err
diff --git a/stores/sql.go b/stores/sql.go
index 5a8a414c7..9e4cf1eee 100644
--- a/stores/sql.go
+++ b/stores/sql.go
@@ -81,10 +81,6 @@ type (
 		closed       bool
 
 		knownContracts map[types.FileContractID]struct{}
-
-		spendingMu     sync.Mutex
-		interactionsMu sync.Mutex
-		objectsMu      sync.Mutex
 	}
 
 	revisionUpdate struct {