diff --git a/src/Providers/TaskTemplatesServiceProvider.php b/src/Providers/TaskTemplatesServiceProvider.php
index 0dea00c..8769e04 100644
--- a/src/Providers/TaskTemplatesServiceProvider.php
+++ b/src/Providers/TaskTemplatesServiceProvider.php
@@ -5,12 +5,14 @@
 use EscolaLms\Tasks\Events\TaskAssignedEvent;
 use EscolaLms\Tasks\Events\TaskCompleteRequestEvent;
 use EscolaLms\Tasks\Events\TaskCompleteUserConfirmationEvent;
+use EscolaLms\Tasks\Events\TaskIncompleteEvent;
 use EscolaLms\Tasks\Events\TaskOverdueEvent;
 use EscolaLms\Templates\Facades\Template;
 use EscolaLms\TemplatesEmail\Core\EmailChannel;
 use EscolaLms\TemplatesEmail\Tasks\TaskAssignedVariables;
 use EscolaLms\TemplatesEmail\Tasks\TaskCompleteRequestVariables;
 use EscolaLms\TemplatesEmail\Tasks\TaskCompleteUserConfirmationVariables;
+use EscolaLms\TemplatesEmail\Tasks\TaskIncompleteVariables;
 use EscolaLms\TemplatesEmail\Tasks\TaskOverdueVariables;
 use Illuminate\Support\ServiceProvider;
 
@@ -41,5 +43,11 @@ public function boot(): void
             EmailChannel::class,
             TaskOverdueVariables::class
         );
+
+        Template::register(
+            TaskIncompleteEvent::class,
+            EmailChannel::class,
+            TaskIncompleteVariables::class
+        );
     }
 }
diff --git a/src/Tasks/TaskIncompleteVariables.php b/src/Tasks/TaskIncompleteVariables.php
new file mode 100644
index 0000000..649bced
--- /dev/null
+++ b/src/Tasks/TaskIncompleteVariables.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace EscolaLms\TemplatesEmail\Tasks;
+
+class TaskIncompleteVariables  extends CommonTasksVariables
+{
+    public static function defaultSectionsContent(): array
+    {
+        return [
+            'title' => __('Incomplete task ":task"', [
+                'task' =>  self::VAR_TASK_TITLE,
+            ]),
+            'content' => self::wrapWithMjml(__('<h1>Hello :user_name!</h1><p>Task ":task" has been marked as incomplete.</p>', [
+                'user_name' => self::VAR_USER_NAME,
+                'task' => self::VAR_TASK_TITLE,
+            ])),
+        ];
+    }
+}
diff --git a/tests/Api/TaskTest.php b/tests/Api/TaskTest.php
index c77142d..f5ccd6e 100644
--- a/tests/Api/TaskTest.php
+++ b/tests/Api/TaskTest.php
@@ -6,6 +6,7 @@
 use EscolaLms\Tasks\Events\TaskAssignedEvent;
 use EscolaLms\Tasks\Events\TaskCompleteRequestEvent;
 use EscolaLms\Tasks\Events\TaskCompleteUserConfirmationEvent;
+use EscolaLms\Tasks\Events\TaskIncompleteEvent;
 use EscolaLms\Tasks\Models\Task;
 use EscolaLms\Tasks\Tests\CreatesUsers;
 use EscolaLms\Templates\Listeners\TemplateEventListener;
@@ -128,4 +129,33 @@ public function testNotificationSentToCreatorWhenStudentCompletesTask(): void
             return true;
         });
     }
+
+    public function testNotificationOnTaskMarkedIncomplete(): void
+    {
+        Event::fake([TaskIncompleteEvent::class]);
+
+        $student = $this->makeStudent();
+
+        /** @var Task $task */
+        $task = Task::factory()
+            ->state(['user_id' => $student->getKey()])
+            ->create();
+
+        $this->actingAs($this->makeAdmin(), 'api')
+            ->postJson('api/admin/tasks/incomplete/' . $task->getKey())
+            ->assertOk();
+
+        Event::assertDispatched(function (TaskIncompleteEvent $event) use ($task) {
+            return $event->getUser()->getKey() === $task->user_id && $event->getTask()->getKey() === $task->getKey();
+        });
+
+        $listener = app(TemplateEventListener::class);
+        $listener->handle(new TaskIncompleteEvent($task->user, $task));
+
+        Mail::assertSent(EmailMailable::class, function (EmailMailable $mailable) use ($student, $task) {
+            $this->assertEquals(__('Incomplete task ":task"', ['task' =>  $task->title]), $mailable->subject);
+            $this->assertTrue($mailable->hasTo($student->email));
+            return true;
+        });
+    }
 }