diff --git a/src/main/java/com/lark/project/service/attachment/builder/UploadAttachmentReqBody.java b/src/main/java/com/lark/project/service/attachment/builder/UploadAttachmentReqBody.java
index d4c3c8e..5cae1ef 100644
--- a/src/main/java/com/lark/project/service/attachment/builder/UploadAttachmentReqBody.java
+++ b/src/main/java/com/lark/project/service/attachment/builder/UploadAttachmentReqBody.java
@@ -9,7 +9,6 @@ public class UploadAttachmentReqBody {
     @SerializedName("file")
     private File file;
 
-    @SerializedName("file")
     private String mimeType;
 
     @SerializedName("field_key")