diff --git a/backend/app/Models/Child.php b/backend/app/Models/Child.php
index 78c3caf5..db2839ad 100644
--- a/backend/app/Models/Child.php
+++ b/backend/app/Models/Child.php
@@ -8,4 +8,5 @@ use Illuminate\Database\Eloquent\Model;
 class Child extends Model
 {
     use HasFactory;
+    protected $fillable = ['father_id', 'title', 'text', 'memo', 'pdf'];
 }
diff --git a/backend/app/Models/FatherRelation.php b/backend/app/Models/FatherRelation.php
index 616b55c7..48e99a9d 100644
--- a/backend/app/Models/FatherRelation.php
+++ b/backend/app/Models/FatherRelation.php
@@ -8,4 +8,5 @@ use Illuminate\Database\Eloquent\Model;
 class FatherRelation extends Model
 {
     use HasFactory;
+    protected $fillable = ['father_id', 'child_id', 'hire_at'];
 }
diff --git a/backend/app/Models/LoginLimits.php b/backend/app/Models/LoginLimits.php
index babc81c4..6e9b5e0d 100644
--- a/backend/app/Models/LoginLimits.php
+++ b/backend/app/Models/LoginLimits.php
@@ -8,4 +8,5 @@ use Illuminate\Database\Eloquent\Model;
 class LoginLimits extends Model
 {
     use HasFactory;
+    protected $fillable = ['user_agent', 'fail_number'];
 }
diff --git a/backend/app/Models/MeetingImage.php b/backend/app/Models/MeetingImage.php
index 94db912d..e884c5b2 100644
--- a/backend/app/Models/MeetingImage.php
+++ b/backend/app/Models/MeetingImage.php
@@ -8,4 +8,5 @@ use Illuminate\Database\Eloquent\Model;
 class MeetingImage extends Model
 {
     use HasFactory;
+    protected $fillable = ['meeting_id', 'image'];
 }
diff --git a/backend/app/Models/TelActivation.php b/backend/app/Models/TelActivation.php
index 5ba75240..1f60ba93 100644
--- a/backend/app/Models/TelActivation.php
+++ b/backend/app/Models/TelActivation.php
@@ -8,4 +8,5 @@ use Illuminate\Database\Eloquent\Model;
 class TelActivation extends Model
 {
     use HasFactory;
+    protected $fillable = ['tel', 'token'];
 }