diff --git a/app/Form/Actions/ParticipantUpdateAction.php b/app/Form/Actions/ParticipantUpdateAction.php
new file mode 100644
index 00000000..df57b641
--- /dev/null
+++ b/app/Form/Actions/ParticipantUpdateAction.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Form\Actions;
+
+use App\Form\Models\Participant;
+use App\Lib\Events\Succeeded;
+use Illuminate\Http\JsonResponse;
+use Lorisleiva\Actions\ActionRequest;
+use Lorisleiva\Actions\Concerns\AsAction;
+
+class ParticipantUpdateAction
+{
+    use AsAction;
+
+    public function rules(): array
+    {
+        return [
+            'data' => 'required',
+        ];
+    }
+
+    public function handle(Participant $participant, ActionRequest $request): JsonResponse
+    {
+        $participant->update(['data' => [...$participant->data, ...$request->validated('data')]]);
+
+        Succeeded::message('Teilnehmer*in bearbeitet.')->dispatch();
+        return response()->json([]);
+    }
+}
diff --git a/app/Form/Resources/ParticipantResource.php b/app/Form/Resources/ParticipantResource.php
index 9ad96f18..95ec8556 100644
--- a/app/Form/Resources/ParticipantResource.php
+++ b/app/Form/Resources/ParticipantResource.php
@@ -33,6 +33,7 @@ class ParticipantResource extends JsonResource
                 'destroy' => route('participant.destroy', ['participant' => $this->getModel()]),
                 'children' => route('form.participant.index', ['form' => $this->form, 'parent' => $this->id]),
                 'fields' => route('participant.fields', ['participant' => $this->getModel()]),
+                'update' => route('participant.update', ['participant' => $this->getModel()]),
             ]
         ];
     }
diff --git a/routes/web.php b/routes/web.php
index 7184b80b..4e14819e 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -40,6 +40,7 @@ use App\Form\Actions\ParticipantAssignAction;
 use App\Form\Actions\ParticipantDestroyAction;
 use App\Form\Actions\ParticipantFieldsAction;
 use App\Form\Actions\ParticipantIndexAction;
+use App\Form\Actions\ParticipantUpdateAction;
 use App\Initialize\Actions\InitializeAction;
 use App\Initialize\Actions\InitializeFormAction;
 use App\Initialize\Actions\NamiGetSearchLayerAction;
@@ -174,6 +175,7 @@ Route::group(['middleware' => 'auth:web'], function (): void {
     Route::delete('/participant/{participant}', ParticipantDestroyAction::class)->name('participant.destroy');
     Route::post('/participant/{participant}/assign', ParticipantAssignAction::class)->name('participant.assign');
     Route::get('/participant/{participant}/fields', ParticipantFieldsAction::class)->name('participant.fields');
+    Route::patch('/participant/{participant}', ParticipantUpdateAction::class)->name('participant.update');
 
     // ------------------------------------ fileshare -----------------------------------
     Route::post('/fileshare', FileshareStoreAction::class)->name('fileshare.store');
diff --git a/tests/Feature/Form/ParticipantIndexActionTest.php b/tests/Feature/Form/ParticipantIndexActionTest.php
index d74507a5..65d5446c 100644
--- a/tests/Feature/Form/ParticipantIndexActionTest.php
+++ b/tests/Feature/Form/ParticipantIndexActionTest.php
@@ -49,6 +49,7 @@ class ParticipantIndexActionTest extends FormTestCase
             ->assertJsonPath('data.0.links.destroy', route('participant.destroy', ['participant' => $form->participants->first()]))
             ->assertJsonPath('data.0.links.assign', route('participant.assign', ['participant' => $form->participants->first()]))
             ->assertJsonPath('data.0.links.fields', route('participant.fields', ['participant' => $form->participants->first()]))
+            ->assertJsonPath('data.0.links.update', route('participant.update', ['participant' => $form->participants->first()]))
             ->assertJsonPath('meta.columns.0.name', 'Vorname')
             ->assertJsonPath('meta.columns.0.base_type', class_basename(TextField::class))
             ->assertJsonPath('meta.columns.0.id', 'vorname')
diff --git a/tests/Feature/Form/ParticipantUpdateActionTest.php b/tests/Feature/Form/ParticipantUpdateActionTest.php
new file mode 100644
index 00000000..a4dddb32
--- /dev/null
+++ b/tests/Feature/Form/ParticipantUpdateActionTest.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Tests\Feature\Form;
+
+use App\Form\Models\Form;
+use App\Form\Models\Participant;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+
+class ParticipantUpdateActionTest extends FormTestCase
+{
+
+    use DatabaseTransactions;
+
+    public function testItUpdatesParticipant(): void
+    {
+        $this->login()->loginNami()->withoutExceptionHandling();
+        $participant = Participant::factory()->data(['vorname' => 'Max', 'select' => ['A', 'B']])
+            ->for(Form::factory()->sections([
+                FormtemplateSectionRequest::new()->name('Sektion')->fields([
+                    $this->textField('vorname')->name('Vorname'),
+                    $this->checkboxesField('select')->options(['A', 'B', 'C']),
+                ])
+            ]))
+            ->create();
+
+        $this->patchJson(route('participant.update', ['participant' => $participant->id]), ['data' => ['vorname' => 'Jane']])
+            ->assertOk();
+
+        $this->assertEquals('Jane', $participant->fresh()->data['vorname']);
+    }
+}