diff --git a/app/Form/Actions/HasValidation.php b/app/Form/Actions/HasValidation.php
index b3daae21..4efec438 100644
--- a/app/Form/Actions/HasValidation.php
+++ b/app/Form/Actions/HasValidation.php
@@ -18,6 +18,7 @@ trait HasValidation
             'name' => 'required|string|max:255',
             'config' => 'array',
             'config.sections.*.name' => 'required',
+            'config.sections.*.intro' => 'nullable|string',
             'config.sections.*.fields' => 'array',
             'config.sections.*.fields.*.name' => 'required|string',
             'config.sections.*.fields.*.type' => ['required', 'string', Rule::in(array_column(Field::asMeta(), 'id'))],
diff --git a/app/Form/Data/SectionData.php b/app/Form/Data/SectionData.php
index eb57c208..d0d4bbfe 100644
--- a/app/Form/Data/SectionData.php
+++ b/app/Form/Data/SectionData.php
@@ -15,7 +15,8 @@ class SectionData extends Data
         public string $name,
         #[WithCast(FieldCollectionCast::class)]
         #[WithTransformer(FieldCollectionTransformer::class)]
-        public FieldCollection $fields
+        public FieldCollection $fields,
+        public ?string $intro
     ) {
     }
 }
diff --git a/tests/Feature/Form/FormUpdateActionTest.php b/tests/Feature/Form/FormUpdateActionTest.php
index 6cd1ed32..0c12f3ce 100644
--- a/tests/Feature/Form/FormUpdateActionTest.php
+++ b/tests/Feature/Form/FormUpdateActionTest.php
@@ -59,6 +59,20 @@ class FormUpdateActionTest extends FormTestCase
         $this->assertEquals(['firstname'], $form->fresh()->meta['active_columns']);
     }
 
+    public function testItUpdatesIntroOfSections(): void
+    {
+        $this->login()->loginNami()->withoutExceptionHandling();
+        $form = Form::factory()
+            ->sections([FormtemplateSectionRequest::new()->intro('aaa')])
+            ->create();
+        $payload = FormRequest::new()->sections([
+            FormtemplateSectionRequest::new()->intro('aaa')
+        ])->create();
+
+        $this->patchJson(route('form.update', ['form' => $form]), $payload)->assertSessionDoesntHaveErrors()->assertOk();
+        $this->assertEquals('aaa', $form->fresh()->config->sections[0]->intro);
+    }
+
     public function testItUpdatesActiveState(): void
     {
         $this->login()->loginNami()->withoutExceptionHandling();
diff --git a/tests/Feature/Form/FormtemplateSectionRequest.php b/tests/Feature/Form/FormtemplateSectionRequest.php
index 1c0cb950..490b3cc5 100644
--- a/tests/Feature/Form/FormtemplateSectionRequest.php
+++ b/tests/Feature/Form/FormtemplateSectionRequest.php
@@ -16,6 +16,7 @@ class FormtemplateSectionRequest extends RequestFactory
     {
         return [
             'name' => $this->faker->words(5, true),
+            'intro' => '',
             'fields' => [],
         ];
     }
@@ -28,6 +29,11 @@ class FormtemplateSectionRequest extends RequestFactory
         return $this->state(['fields' => $fields]);
     }
 
+    public function intro(string $intro): self
+    {
+        return $this->state(['intro' => $intro]);
+    }
+
     /**
      * @param mixed $args
      */