diff --git a/lib/grade/grade_grade.php b/lib/grade/grade_grade.php
index bd021092b00..41fbd24df19 100644
--- a/lib/grade/grade_grade.php
+++ b/lib/grade/grade_grade.php
@@ -221,6 +221,12 @@ class grade_grade extends grade_object {
     /** @var float $deductedmark mark deducted from final grade */
     public float $deductedmark = 0;
 
+    /**
+     * Date when this grade was last graded.
+     * @var int $dategraded
+     */
+    public $dategraded = null;
+
     /**
      * Returns array of grades for given grade_item+users
      *
diff --git a/mod/lti/service/gradebookservices/classes/local/service/gradebookservices.php b/mod/lti/service/gradebookservices/classes/local/service/gradebookservices.php
index 47383c42dc4..d020a198708 100644
--- a/mod/lti/service/gradebookservices/classes/local/service/gradebookservices.php
+++ b/mod/lti/service/gradebookservices/classes/local/service/gradebookservices.php
@@ -541,6 +541,7 @@ class gradebookservices extends service_base {
             $grade->feedbackformat = $feedbackformat;
             $grade->feedback = $feedback;
             $grade->rawgrade = $finalgrade;
+            $grade->dategraded = $timemodified;
             $status = grade_update($source, $gradeitem->courseid,
                 $gradeitem->itemtype, $gradeitem->itemmodule,
                 $gradeitem->iteminstance, $gradeitem->itemnumber, $grade);