diff --git a/dto/rerank.go b/dto/rerank.go
index 21f6437c..5ea68cba 100644
--- a/dto/rerank.go
+++ b/dto/rerank.go
@@ -4,7 +4,7 @@ type RerankRequest struct {
 	Documents       []any  `json:"documents"`
 	Query           string `json:"query"`
 	Model           string `json:"model"`
-	TopN            int    `json:"top_n"`
+	TopN            int    `json:"top_n,omitempty"`
 	ReturnDocuments *bool  `json:"return_documents,omitempty"`
 	MaxChunkPerDoc  int    `json:"max_chunk_per_doc,omitempty"`
 	OverLapTokens   int    `json:"overlap_tokens,omitempty"`
diff --git a/relay/channel/jina/constant.go b/relay/channel/jina/constant.go
index 45fc44c9..be290fb6 100644
--- a/relay/channel/jina/constant.go
+++ b/relay/channel/jina/constant.go
@@ -3,6 +3,7 @@ package jina
 var ModelList = []string{
 	"jina-clip-v1",
 	"jina-reranker-v2-base-multilingual",
+	"jina-reranker-m0",
 }
 
 var ChannelName = "jina"
diff --git a/relay/rerank_handler.go b/relay/rerank_handler.go
index 319811b8..5cf384a8 100644
--- a/relay/rerank_handler.go
+++ b/relay/rerank_handler.go
@@ -78,12 +78,15 @@ func RerankHelper(c *gin.Context, relayMode int) (openaiErr *dto.OpenAIErrorWith
 		return service.OpenAIErrorWrapperLocal(err, "json_marshal_failed", http.StatusInternalServerError)
 	}
 	requestBody := bytes.NewBuffer(jsonData)
-	statusCodeMappingStr := c.GetString("status_code_mapping")
+	if common.DebugEnabled {
+		println(fmt.Sprintf("Rerank request body: %s", requestBody.String()))
+	}
 	resp, err := adaptor.DoRequest(c, relayInfo, requestBody)
 	if err != nil {
 		return service.OpenAIErrorWrapper(err, "do_request_failed", http.StatusInternalServerError)
 	}
 
+	statusCodeMappingStr := c.GetString("status_code_mapping")
 	var httpResp *http.Response
 	if resp != nil {
 		httpResp = resp.(*http.Response)