diff --git a/assets b/assets
index d0540548..a095f8c6 160000
--- a/assets
+++ b/assets
@@ -1 +1 @@
-Subproject commit d0540548cfb2caeec0c7d44e85819c833fdeda0f
+Subproject commit a095f8c612562536c536f54be04ec84e500d5ca7
diff --git a/inventory/types/types.go b/inventory/types/types.go
index bc069859..2306ac40 100644
--- a/inventory/types/types.go
+++ b/inventory/types/types.go
@@ -101,6 +101,8 @@ type (
 		SourceAuth bool `json:"source_auth,omitempty"`
 		// QiniuUploadCdn whether to use CDN for Qiniu upload.
 		QiniuUploadCdn bool `json:"qiniu_upload_cdn,omitempty"`
+		// ChunkConcurrency the number of chunks to upload concurrently.
+		ChunkConcurrency int `json:"chunk_concurrency,omitempty"`
 	}
 
 	FileType         int
diff --git a/service/explorer/response.go b/service/explorer/response.go
index 302a2275..991039b9 100644
--- a/service/explorer/response.go
+++ b/service/explorer/response.go
@@ -259,6 +259,7 @@ type StoragePolicy struct {
 	Type              types.PolicyType `json:"type"`
 	MaxSize           int64            `json:"max_size"`
 	Relay             bool             `json:"relay,omitempty"`
+	ChunkConcurrency  int              `json:"chunk_concurrency,omitempty"`
 }
 
 type Entity struct {
@@ -452,11 +453,12 @@ func BuildStoragePolicy(sp *ent.StoragePolicy, hasher hashid.Encoder) *StoragePo
 	}
 
 	res := &StoragePolicy{
-		ID:      hashid.EncodePolicyID(hasher, sp.ID),
-		Name:    sp.Name,
-		Type:    types.PolicyType(sp.Type),
-		MaxSize: sp.MaxSize,
-		Relay:   sp.Settings.Relay,
+		ID:               hashid.EncodePolicyID(hasher, sp.ID),
+		Name:             sp.Name,
+		Type:             types.PolicyType(sp.Type),
+		MaxSize:          sp.MaxSize,
+		Relay:            sp.Settings.Relay,
+		ChunkConcurrency: sp.Settings.ChunkConcurrency,
 	}
 
 	if sp.Settings.IsFileTypeDenyList {