diff --git a/src/main/java/run/halo/app/model/params/SheetParam.java b/src/main/java/run/halo/app/model/params/SheetParam.java
index a5570eccb..de61a0dfd 100644
--- a/src/main/java/run/halo/app/model/params/SheetParam.java
+++ b/src/main/java/run/halo/app/model/params/SheetParam.java
@@ -11,6 +11,7 @@ import run.halo.app.utils.HaloUtils;
 import javax.validation.constraints.Min;
 import javax.validation.constraints.NotBlank;
 import javax.validation.constraints.Size;
+import java.util.Date;
 
 /**
  * @author johnniang
@@ -35,6 +36,8 @@ public class SheetParam implements InputConverter<Sheet> {
 
     private Boolean disallowComment = false;
 
+    private Date createTime;
+
     @Size(max = 255, message = "Length of password must not be more than {max}")
     private String password;