diff --git a/api/api_account.pb.go b/api/api_account.pb.go
index 1f0e91d..c24d775 100644
--- a/api/api_account.pb.go
+++ b/api/api_account.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_account.proto
 
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@@ -1032,35 +1032,35 @@ var file_api_account_proto_rawDesc = []byte{
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@@ -1068,9 +1068,9 @@ var file_api_account_proto_rawDesc = []byte{
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@@ -1078,18 +1078,18 @@ var file_api_account_proto_rawDesc = []byte{
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diff --git a/api/api_action.pb.go b/api/api_action.pb.go
index 8a6f2cd..8ced31e 100644
--- a/api/api_action.pb.go
+++ b/api/api_action.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_action.proto
 
@@ -1383,52 +1383,52 @@ var file_api_action_proto_rawDesc = []byte{
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@@ -1436,10 +1436,10 @@ var file_api_action_proto_rawDesc = []byte{
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 }
 
diff --git a/api/api_actions.pb.go b/api/api_actions.pb.go
index 9cd7865..f282f0b 100644
--- a/api/api_actions.pb.go
+++ b/api/api_actions.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_actions.proto
 
@@ -538,10 +538,10 @@ var file_api_actions_proto_rawDesc = []byte{
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@@ -549,10 +549,10 @@ var file_api_actions_proto_rawDesc = []byte{
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 }
 
diff --git a/api/api_chain.pb.go b/api/api_chain.pb.go
index 72abfef..ac32062 100644
--- a/api/api_chain.pb.go
+++ b/api/api_chain.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_chain.proto
 
@@ -795,26 +795,26 @@ var file_api_chain_proto_rawDesc = []byte{
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@@ -833,9 +833,9 @@ var file_api_chain_proto_rawDesc = []byte{
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diff --git a/api/api_delegate.pb.go b/api/api_delegate.pb.go
index 4ab54d9..fa274d1 100644
--- a/api/api_delegate.pb.go
+++ b/api/api_delegate.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_delegate.proto
 
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@@ -1668,19 +1668,19 @@ var file_api_delegate_proto_rawDesc = []byte{
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 }
 
diff --git a/api/api_hermes.graphql.go b/api/api_hermes.graphql.go
index 4c17dec..545d15a 100644
--- a/api/api_hermes.graphql.go
+++ b/api/api_hermes.graphql.go
@@ -96,7 +96,7 @@ func Gql__type_HermesRequest() *graphql.Object {
 					Type: graphql.Int,
 				},
 				"rewardAddress": &graphql.Field{
-					Type: graphql.String,
+					Type: graphql.NewList(graphql.String),
 				},
 			},
 		})
@@ -495,7 +495,7 @@ func Gql__input_HermesRequest() *graphql.InputObject {
 					Type: graphql.Int,
 				},
 				"rewardAddress": &graphql.InputObjectFieldConfig{
-					Type: graphql.String,
+					Type: graphql.NewList(graphql.String),
 				},
 			},
 		})
@@ -900,7 +900,7 @@ func (x *graphql__resolver_HermesService) GetQueries(conn *grpc.ClientConn) grap
 					Type: graphql.Int,
 				},
 				"rewardAddress": &graphql.ArgumentConfig{
-					Type: graphql.String,
+					Type: graphql.NewList(graphql.String),
 				},
 			},
 			Resolve: func(p graphql.ResolveParams) (interface{}, error) {
diff --git a/api/api_hermes.pb.go b/api/api_hermes.pb.go
index 7c2c3d3..707cd20 100644
--- a/api/api_hermes.pb.go
+++ b/api/api_hermes.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_hermes.proto
 
@@ -28,9 +28,9 @@ type HermesRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	StartEpoch    uint64 `protobuf:"varint,1,opt,name=startEpoch,proto3" json:"startEpoch,omitempty"`      // Start epoch number
-	EpochCount    uint64 `protobuf:"varint,2,opt,name=epochCount,proto3" json:"epochCount,omitempty"`      // Number of epochs to query
-	RewardAddress string `protobuf:"bytes,3,opt,name=rewardAddress,proto3" json:"rewardAddress,omitempty"` //Name of reward address
+	StartEpoch    uint64   `protobuf:"varint,1,opt,name=startEpoch,proto3" json:"startEpoch,omitempty"`      // Start epoch number
+	EpochCount    uint64   `protobuf:"varint,2,opt,name=epochCount,proto3" json:"epochCount,omitempty"`      // Number of epochs to query
+	RewardAddress []string `protobuf:"bytes,3,rep,name=rewardAddress,proto3" json:"rewardAddress,omitempty"` //Name of reward address
 }
 
 func (x *HermesRequest) Reset() {
@@ -79,11 +79,11 @@ func (x *HermesRequest) GetEpochCount() uint64 {
 	return 0
 }
 
-func (x *HermesRequest) GetRewardAddress() string {
+func (x *HermesRequest) GetRewardAddress() []string {
 	if x != nil {
 		return x.RewardAddress
 	}
-	return ""
+	return nil
 }
 
 type RewardDistribution struct {
@@ -1276,7 +1276,7 @@ var file_api_hermes_proto_rawDesc = []byte{
 	0x72, 0x74, 0x45, 0x70, 0x6f, 0x63, 0x68, 0x12, 0x1e, 0x0a, 0x0a, 0x65, 0x70, 0x6f, 0x63, 0x68,
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@@ -1465,53 +1465,53 @@ var file_api_hermes_proto_rawDesc = []byte{
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 }
 
diff --git a/api/api_staking.pb.go b/api/api_staking.pb.go
index 58ef57f..179907f 100644
--- a/api/api_staking.pb.go
+++ b/api/api_staking.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_staking.proto
 
@@ -307,9 +307,9 @@ var file_api_staking_proto_rawDesc = []byte{
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@@ -317,10 +317,10 @@ var file_api_staking_proto_rawDesc = []byte{
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 }
 
diff --git a/api/api_stream.pb.go b/api/api_stream.pb.go
index 75db90a..1cddbb8 100644
--- a/api/api_stream.pb.go
+++ b/api/api_stream.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_stream.proto
 
diff --git a/api/api_voting.pb.go b/api/api_voting.pb.go
index f6da336..3b27dae 100644
--- a/api/api_voting.pb.go
+++ b/api/api_voting.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_voting.proto
 
@@ -727,25 +727,25 @@ var file_api_voting_proto_rawDesc = []byte{
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 }
 
diff --git a/api/api_xrc20.pb.go b/api/api_xrc20.pb.go
index a531fa2..84295ea 100644
--- a/api/api_xrc20.pb.go
+++ b/api/api_xrc20.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_xrc20.proto
 
@@ -768,9 +768,9 @@ var file_api_xrc20_proto_rawDesc = []byte{
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@@ -779,26 +779,26 @@ var file_api_xrc20_proto_rawDesc = []byte{
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@@ -807,10 +807,10 @@ var file_api_xrc20_proto_rawDesc = []byte{
 	0x6f, 0x6c, 0x64, 0x65, 0x72, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x65, 0x73, 0x52, 0x65,
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 }
 
diff --git a/api/api_xrc721.pb.go b/api/api_xrc721.pb.go
index edaf78b..30ee230 100644
--- a/api/api_xrc721.pb.go
+++ b/api/api_xrc721.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: api_xrc721.proto
 
@@ -770,9 +770,9 @@ var file_api_xrc721_proto_rawDesc = []byte{
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@@ -781,27 +781,27 @@ var file_api_xrc721_proto_rawDesc = []byte{
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@@ -810,11 +810,11 @@ var file_api_xrc721_proto_rawDesc = []byte{
 	0x6e, 0x48, 0x6f, 0x6c, 0x64, 0x65, 0x72, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x65, 0x73,
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 	0x6f, 0x33,
 }
 
diff --git a/api/pagination/pagination.pb.go b/api/pagination/pagination.pb.go
index d7a01e8..3165f74 100644
--- a/api/pagination/pagination.pb.go
+++ b/api/pagination/pagination.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.32.0
 // 	protoc        v3.17.3
 // source: include/pagination.proto
 
diff --git a/apiservice/hermes.go b/apiservice/hermes.go
index 79dcada..45207eb 100644
--- a/apiservice/hermes.go
+++ b/apiservice/hermes.go
@@ -64,11 +64,11 @@ type AccountReward struct {
 
 type HermesDistribution api.HermesDistribution
 
-func distributionPlanByRewardAddress(startEpoch uint64, endEpoch uint64, rewardAddress string) (map[string]map[uint64]*HermesDistributionPlan, error) {
+func distributionPlanByRewardAddress(startEpoch uint64, endEpoch uint64, rewardAddress []string) (map[string]map[uint64]*HermesDistributionPlan, error) {
 
 	db := db.DB()
 	var ids []HermesVotingResult
-	if err := db.Table("hermes_voting_results").Where("epoch_number >= ?  AND epoch_number <= ? AND reward_address= ?", startEpoch, endEpoch, rewardAddress).Find(&ids).Error; err != nil {
+	if err := db.Table("hermes_voting_results").Where("epoch_number >= ?  AND epoch_number <= ? AND reward_address IN ?", startEpoch, endEpoch, rewardAddress).Find(&ids).Error; err != nil {
 		return nil, err
 	}
 
diff --git a/apiservice/hermes_service.go b/apiservice/hermes_service.go
index 42420cb..21a1991 100644
--- a/apiservice/hermes_service.go
+++ b/apiservice/hermes_service.go
@@ -47,7 +47,7 @@ func (s *HermesService) HermesDropRecords(ctx context.Context, req *api.HermesDr
 	return resp, nil
 }
 
-//grpcurl -plaintext -d '{"startEpoch": 22416, "epochCount": 1, "rewardAddress": "io12mgttmfa2ffn9uqvn0yn37f4nz43d248l2ga85"}' 127.0.0.1:8888 api.AccountService.Hermes
+// grpcurl -plaintext -d '{"startEpoch": 22416, "epochCount": 1, "rewardAddress": "io12mgttmfa2ffn9uqvn0yn37f4nz43d248l2ga85"}' 127.0.0.1:8888 api.AccountService.Hermes
 func (s *HermesService) Hermes(ctx context.Context, req *api.HermesRequest) (*api.HermesResponse, error) {
 	resp := &api.HermesResponse{}
 	startEpoch := req.GetStartEpoch()
@@ -162,7 +162,7 @@ func (s *HermesService) Hermes(ctx context.Context, req *api.HermesRequest) (*ap
 	return resp, nil
 }
 
-//HermesByVoter returns Hermes voters' receiving history
+// HermesByVoter returns Hermes voters' receiving history
 func (s *HermesService) HermesByVoter(ctx context.Context, req *api.HermesByVoterRequest) (*api.HermesByVoterResponse, error) {
 	resp := &api.HermesByVoterResponse{}
 	startEpoch := req.GetStartEpoch()
@@ -274,7 +274,7 @@ func (s *HermesService) HermesAverageStats(ctx context.Context, req *api.HermesA
 	rewardAddress := req.GetRewardAddress()
 	endEpoch := startEpoch + epochCount - 1
 
-	distributePlanMap, err := distributionPlanByRewardAddress(startEpoch, endEpoch, rewardAddress)
+	distributePlanMap, err := distributionPlanByRewardAddress(startEpoch, endEpoch, []string{rewardAddress})
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to get reward distribution plan")
 	}
diff --git a/proto/api_hermes.proto b/proto/api_hermes.proto
index 66c9821..5f360b6 100644
--- a/proto/api_hermes.proto
+++ b/proto/api_hermes.proto
@@ -9,7 +9,7 @@ option go_package = "./api";
 message HermesRequest {
   uint64 startEpoch = 1; // Start epoch number
   uint64 epochCount = 2; // Number of epochs to query
-  string rewardAddress = 3; //Name of reward address
+  repeated string rewardAddress = 3; //Name of reward address
 }
 
 message RewardDistribution {