diff --git a/backend/app/Http/Controllers/Api/ChildrenController.php b/backend/app/Http/Controllers/Api/ChildrenController.php
index 06cbf928..0809961d 100644
--- a/backend/app/Http/Controllers/Api/ChildrenController.php
+++ b/backend/app/Http/Controllers/Api/ChildrenController.php
@@ -274,7 +274,7 @@ class ChildrenController extends Controller {
             return ['status_code' => 400, 'error_messages' => ['画像の更新に失敗しました。']];
         }
 
-        if (null === ($result = Child::where('first_name', 'LIKE', '%'.$r->keyword.'%')->orWhere('last_name', 'LIKE', '%'.$r->keyword.'%')->orderBy('created_at', 'desc')->get())) {
+        if (null === ($result = Child::where('first_name', 'LIKE', '%'.$r->keyword.'%')->orWhere('last_name', 'LIKE', '%'.$r->keyword.'%')->orderBy('updated_at', 'desc')->get())) {
             // 親一覧の取得に失敗
             return ['status_code' => 400];
         }
@@ -286,7 +286,7 @@ class ChildrenController extends Controller {
     public function list () {
         $child_select = ['id', 'first_name', 'last_name', 'tel', 'image'];
 
-        if (null === ($result = Child::select($child_select)->orderBy('created_at', 'desc')->get())) {
+        if (null === ($result = Child::select($child_select)->orderBy('updated_at', 'desc')->get())) {
             // 親一覧の取得に失敗
             return ['status_code' => 400];
         }
@@ -302,7 +302,7 @@ class ChildrenController extends Controller {
         $result = [];
         $child_select = ['id', 'image', 'first_name', 'last_name', 'company', 'tel', 'email'];
 
-        if (null === ($list = FatherRelation::select('child_id')->where('father_id', (int)$r->father_id)->orderBy('created_at', 'desc')->get())) {
+        if (null === ($list = FatherRelation::select('child_id')->where('father_id', (int)$r->father_id)->orderBy('updated_at', 'desc')->get())) {
             return ['status_code' => 400];
         }
 
@@ -319,7 +319,7 @@ class ChildrenController extends Controller {
         $result = [];
         $child_select = ['id', 'image', 'last_name', 'first_name'];
 
-        if (null === ($list = MeetingApprovals::select('child_id')->where('meeting_id', (int)$r->meeting_id)->orderBy('created_at', 'desc')->get())) {
+        if (null === ($list = MeetingApprovals::select('child_id')->where('meeting_id', (int)$r->meeting_id)->orderBy('updated_at', 'desc')->get())) {
             return ['status_code' => 400];
         }
 
@@ -341,7 +341,7 @@ class ChildrenController extends Controller {
         $child_select = ['id', 'image', 'last_name', 'first_name', 'tel'];
         $meeting_approvals_select = ['approval_at'];
 
-        if (null === ($list = MeetingApprovals::select($meeting_approvals_select)->where('meeting_id', (int)$r->meeting_id)->whereNull('approval_at')->orderBy('created_at', 'desc')->get())) {
+        if (null === ($list = MeetingApprovals::select($meeting_approvals_select)->where('meeting_id', (int)$r->meeting_id)->whereNull('approval_at')->orderBy('updated_at', 'desc')->get())) {
             return ['status_code' => 400];
         }
 
@@ -364,7 +364,7 @@ class ChildrenController extends Controller {
         $child_select = ['id', 'image', 'last_name', 'first_name', 'tel'];
         $meeting_approvals_select = ['approval_at'];
 
-        if (null === ($list = MeetingApprovals::select($meeting_approvals_select)->where('meeting_id', $r->meeting_id)->whereNotNull('approval_at')->orderBy('created_at', 'desc')->get())) {
+        if (null === ($list = MeetingApprovals::select($meeting_approvals_select)->where('meeting_id', $r->meeting_id)->whereNotNull('approval_at')->orderBy('updated_at', 'desc')->get())) {
             return ['status_code' => 400];
         }