diff --git a/modules/structs/issue_comment.go b/modules/structs/issue_comment.go
index 9e8f5c4bf3..8961b70ad3 100644
--- a/modules/structs/issue_comment.go
+++ b/modules/structs/issue_comment.go
@@ -28,6 +28,8 @@ type Comment struct {
 type CreateIssueCommentOption struct {
 	// required:true
 	Body string `json:"body" binding:"Required"`
+	// swagger:strfmt date-time
+	Updated *time.Time `json:"updated_at"`
 }
 
 // EditIssueCommentOption options for editing a comment
diff --git a/routers/api/v1/repo/issue_comment.go b/routers/api/v1/repo/issue_comment.go
index 1f8e16147f..6eed71fc74 100644
--- a/routers/api/v1/repo/issue_comment.go
+++ b/routers/api/v1/repo/issue_comment.go
@@ -362,6 +362,12 @@ func CreateIssueComment(ctx *context.APIContext) {
 		return
 	}
 
+	err = issue_service.SetIssueUpdateDate(ctx, issue, form.Updated, ctx.Doer)
+	if err != nil {
+		ctx.Error(http.StatusForbidden, "SetIssueUpdateDate", err)
+		return
+	}
+
 	comment, err := issue_service.CreateIssueComment(ctx, ctx.Doer, ctx.Repo.Repository, issue, form.Body, nil)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "CreateIssueComment", err)
diff --git a/templates/swagger/v1_json.tmpl b/templates/swagger/v1_json.tmpl
index e012c22a74..3b9d49dd92 100644
--- a/templates/swagger/v1_json.tmpl
+++ b/templates/swagger/v1_json.tmpl
@@ -17047,6 +17047,11 @@
         "body": {
           "type": "string",
           "x-go-name": "Body"
+        },
+        "updated_at": {
+          "type": "string",
+          "format": "date-time",
+          "x-go-name": "Updated"
         }
       },
       "x-go-package": "code.gitea.io/gitea/modules/structs"