diff --git a/github/code-scanning.go b/github/code-scanning.go
index f05420829e..53200fa3ee 100644
--- a/github/code-scanning.go
+++ b/github/code-scanning.go
@@ -87,6 +87,7 @@ type Alert struct {
 	DismissedBy        *User                 `json:"dismissed_by,omitempty"`
 	DismissedAt        *Timestamp            `json:"dismissed_at,omitempty"`
 	DismissedReason    *string               `json:"dismissed_reason,omitempty"`
+	DismissedComment   *string               `json:"dismissed_comment,omitempty"`
 	InstancesURL       *string               `json:"instances_url,omitempty"`
 }
 
diff --git a/github/github-accessors.go b/github/github-accessors.go
index 3f510b9ec1..ca558f6395 100644
--- a/github/github-accessors.go
+++ b/github/github-accessors.go
@@ -302,6 +302,14 @@ func (a *Alert) GetDismissedBy() *User {
 	return a.DismissedBy
 }
 
+// GetDismissedComment returns the DismissedComment field if it's non-nil, zero value otherwise.
+func (a *Alert) GetDismissedComment() string {
+	if a == nil || a.DismissedComment == nil {
+		return ""
+	}
+	return *a.DismissedComment
+}
+
 // GetDismissedReason returns the DismissedReason field if it's non-nil, zero value otherwise.
 func (a *Alert) GetDismissedReason() string {
 	if a == nil || a.DismissedReason == nil {
diff --git a/github/github-accessors_test.go b/github/github-accessors_test.go
index 0a3d0ed18b..7cc7834acb 100644
--- a/github/github-accessors_test.go
+++ b/github/github-accessors_test.go
@@ -333,6 +333,16 @@ func TestAlert_GetDismissedBy(tt *testing.T) {
 	a.GetDismissedBy()
 }
 
+func TestAlert_GetDismissedComment(tt *testing.T) {
+	var zeroValue string
+	a := &Alert{DismissedComment: &zeroValue}
+	a.GetDismissedComment()
+	a = &Alert{}
+	a.GetDismissedComment()
+	a = nil
+	a.GetDismissedComment()
+}
+
 func TestAlert_GetDismissedReason(tt *testing.T) {
 	var zeroValue string
 	a := &Alert{DismissedReason: &zeroValue}