diff --git a/client/http/client.go b/client/http/client.go
index 1de05687a2e1..4fea7a65086d 100644
--- a/client/http/client.go
+++ b/client/http/client.go
@@ -41,7 +41,7 @@ type Client interface {
 	GetHotReadRegions(context.Context) (*StoreHotPeersInfos, error)
 	GetHotWriteRegions(context.Context) (*StoreHotPeersInfos, error)
 	GetStores(context.Context) (*StoresInfo, error)
-	GetMinResolvedTSByStoresIDs(context.Context, []string) (uint64, map[uint64]uint64, error)
+	GetMinResolvedTSByStoresIDs(context.Context, []uint64) (uint64, map[uint64]uint64, error)
 	Close()
 }
 
@@ -250,7 +250,7 @@ func (c *client) GetStores(ctx context.Context) (*StoresInfo, error) {
 }
 
 // GetMinResolvedTSByStoresIDs get min-resolved-ts by stores IDs.
-func (c *client) GetMinResolvedTSByStoresIDs(ctx context.Context, storeIDs []string) (uint64, map[uint64]uint64, error) {
+func (c *client) GetMinResolvedTSByStoresIDs(ctx context.Context, storeIDs []uint64) (uint64, map[uint64]uint64, error) {
 	uri := MinResolvedTSPrefix
 	// scope is an optional parameter, it can be `cluster` or specified store IDs.
 	// - When no scope is given, cluster-level's min_resolved_ts will be returned and storesMinResolvedTS will be nil.
@@ -258,7 +258,11 @@ func (c *client) GetMinResolvedTSByStoresIDs(ctx context.Context, storeIDs []str
 	// - When scope given a list of stores, min_resolved_ts will be provided for each store
 	//      and the scope-specific min_resolved_ts will be returned.
 	if len(storeIDs) != 0 {
-		uri = fmt.Sprintf("%s?scope=%s", uri, strings.Join(storeIDs, ","))
+		storeIDStrs := make([]string, len(storeIDs))
+		for idx, id := range storeIDs {
+			storeIDStrs[idx] = fmt.Sprintf("%d", id)
+		}
+		uri = fmt.Sprintf("%s?scope=%s", uri, strings.Join(storeIDStrs, ","))
 	}
 	resp := struct {
 		MinResolvedTS       uint64            `json:"min_resolved_ts"`
diff --git a/tests/integrations/client/http_client_test.go b/tests/integrations/client/http_client_test.go
index f121ed7a6568..03d90c6cd32a 100644
--- a/tests/integrations/client/http_client_test.go
+++ b/tests/integrations/client/http_client_test.go
@@ -16,6 +16,7 @@ package client_test
 
 import (
 	"context"
+	"math"
 	"testing"
 
 	"github.com/stretchr/testify/suite"
@@ -65,9 +66,22 @@ func (suite *httpClientTestSuite) TearDownSuite() {
 
 func (suite *httpClientTestSuite) TestGetMinResolvedTSByStoresIDs() {
 	re := suite.Require()
-
+	// Get the cluster-level min resolved TS.
 	minResolvedTS, storeMinResolvedTSMap, err := suite.client.GetMinResolvedTSByStoresIDs(suite.ctx, nil)
 	re.NoError(err)
 	re.Greater(minResolvedTS, uint64(0))
 	re.Empty(storeMinResolvedTSMap)
+	// Get the store-level min resolved TS.
+	minResolvedTS, storeMinResolvedTSMap, err = suite.client.GetMinResolvedTSByStoresIDs(suite.ctx, []uint64{1})
+	re.NoError(err)
+	re.Greater(minResolvedTS, uint64(0))
+	re.Len(storeMinResolvedTSMap, 1)
+	re.Equal(minResolvedTS, storeMinResolvedTSMap[1])
+	// Get the store-level min resolved TS with an invalid store ID.
+	minResolvedTS, storeMinResolvedTSMap, err = suite.client.GetMinResolvedTSByStoresIDs(suite.ctx, []uint64{1, 2})
+	re.NoError(err)
+	re.Greater(minResolvedTS, uint64(0))
+	re.Len(storeMinResolvedTSMap, 2)
+	re.Equal(minResolvedTS, storeMinResolvedTSMap[1])
+	re.Equal(uint64(math.MaxUint64), storeMinResolvedTSMap[2])
 }