diff --git a/migrations/Version20260125191247.php b/migrations/Version20260125191247.php
new file mode 100644
index 0000000..224f971
--- /dev/null
+++ b/migrations/Version20260125191247.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260125191247 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE quiz_candidate ADD penalty_seconds SMALLINT DEFAULT 0 NOT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE quiz_candidate DROP penalty_seconds');
+    }
+}
diff --git a/src/Controller/Backoffice/QuizController.php b/src/Controller/Backoffice/QuizController.php
index a44ec34..c54c872 100644
--- a/src/Controller/Backoffice/QuizController.php
+++ b/src/Controller/Backoffice/QuizController.php
@@ -117,4 +117,23 @@ class QuizController extends AbstractController
 
         return $this->redirectToRoute('tvdt_backoffice_quiz', ['seasonCode' => $quiz->season->seasonCode, 'quiz' => $quiz->id]);
     }
+
+    #[IsGranted(SeasonVoter::EDIT, subject: 'quiz')]
+    #[Route(
+        '/backoffice/quiz/{quiz}/candidate/{candidate}/modify_penalty',
+        name: 'tvdt_backoffice_modify_penalty',
+        requirements: ['quiz' => Requirement::UUID, 'candidate' => Requirement::UUID],
+    )]
+    public function modifyPenalty(Quiz $quiz, Candidate $candidate, Request $request): RedirectResponse
+    {
+        if (!$request->isMethod('POST')) {
+            throw new MethodNotAllowedHttpException(['POST']);
+        }
+
+        $penalty = (int) $request->request->get('penalty');
+
+        $this->quizCandidateRepository->setPenaltyForCandidate($quiz, $candidate, $penalty);
+
+        return $this->redirectToRoute('tvdt_backoffice_quiz', ['seasonCode' => $quiz->season->seasonCode, 'quiz' => $quiz->id]);
+    }
 }
diff --git a/src/Dto/Result.php b/src/Dto/Result.php
index 0ebb5c2..f8bee43 100644
--- a/src/Dto/Result.php
+++ b/src/Dto/Result.php
@@ -13,6 +13,7 @@ final readonly class Result
         public string $name,
         public int $correct,
         public float $corrections,
+        public int $penaltySeconds,
         public \DateInterval $time,
         public float $score,
     ) {}
diff --git a/src/Entity/QuizCandidate.php b/src/Entity/QuizCandidate.php
index c3054d9..e77fff7 100644
--- a/src/Entity/QuizCandidate.php
+++ b/src/Entity/QuizCandidate.php
@@ -24,6 +24,9 @@ class QuizCandidate
     #[ORM\Column]
     public float $corrections = 0;
 
+    #[ORM\Column(type: Types::SMALLINT, options: ['default' => 0])]
+    public int $penaltySeconds = 0;
+
     #[Gedmo\Timestampable(on: 'create')]
     #[ORM\Column(type: Types::DATETIMETZ_IMMUTABLE)]
     public private(set) \DateTimeImmutable $created;
diff --git a/src/Repository/QuizCandidateRepository.php b/src/Repository/QuizCandidateRepository.php
index d51a289..da50c62 100644
--- a/src/Repository/QuizCandidateRepository.php
+++ b/src/Repository/QuizCandidateRepository.php
@@ -44,4 +44,15 @@ class QuizCandidateRepository extends ServiceEntityRepository
         $quizCandidate->corrections = $corrections;
         $this->getEntityManager()->flush();
     }
+
+    public function setPenaltyForCandidate(Quiz $quiz, Candidate $candidate, int $penalty): void
+    {
+        $quizCandidate = $this->findOneBy(['candidate' => $candidate, 'quiz' => $quiz]);
+        if (!$quizCandidate instanceof QuizCandidate) {
+            throw new \InvalidArgumentException('Quiz candidate not found');
+        }
+
+        $quizCandidate->penaltySeconds = $penalty;
+        $this->getEntityManager()->flush();
+    }
 }
diff --git a/src/Repository/QuizRepository.php b/src/Repository/QuizRepository.php
index 92d468d..9c4a4e9 100644
--- a/src/Repository/QuizRepository.php
+++ b/src/Repository/QuizRepository.php
@@ -81,6 +81,7 @@ class QuizRepository extends ServiceEntityRepository
                 c.name,
                 sum(case when a.isRightAnswer = true then 1 else 0 end) as correct,
                 qd.corrections,
+                qd.penaltySeconds,
                 max(ga.created) as end_time,
                 qd.created as start_time,
                 (sum(case when a.isRightAnswer = true then 1 else 0 end) + qd.corrections) as score
@@ -99,6 +100,7 @@ class QuizRepository extends ServiceEntityRepository
             name: $row['name'],
             correct: (int) $row['correct'],
             corrections: $row['corrections'],
+            penaltySeconds: $row['penaltySeconds'],
             time: $row['start_time']->diff(new DateTimeImmutable($row['end_time'])),
             score: $row['score'],
         ), $result);
diff --git a/templates/backoffice/quiz.html.twig b/templates/backoffice/quiz.html.twig
index ea19683..4e7cc2e 100644
--- a/templates/backoffice/quiz.html.twig
+++ b/templates/backoffice/quiz.html.twig
@@ -84,6 +84,7 @@
                 <th scope="col">{{ 'Candidate'|trans }}</th>
                 <th style="width: 15%" scope="col">{{ 'Correct Answers'|trans }}</th>
                 <th style="width: 20%" scope="col">{{ 'Corrections'|trans }}</th>
+                <th style="width: 20%" scope="col">{{ 'Penalty'|trans }}</th>
                 <th style="width: 10%" scope="col">{{ 'Score'|trans }}</th>
                 <th style="width: 20%" scope="col">{{ 'Time'|trans }}</th>
             </tr>
@@ -108,6 +109,21 @@
                             </div>
                         </form>
                     </td>
+                    <td>
+                        <form method="post"
+                              action="{{ path('tvdt_backoffice_modify_penalty', {quiz: quiz.id, candidate: candidate.id}) }}">
+                            <div class="row">
+                                <div class="col-8">
+                                    <input class="form-control form-control-sm" type="number"
+                                           value="{{ candidate.penaltySeconds }}" step="1"
+                                           name="penalty">
+                                </div>
+                                <div class="col-2">
+                                    <button class="btn btn-sm btn-primary" type="submit">{{ 'Save'|trans }}</button>
+                                </div>
+                            </div>
+                        </form>
+                    </td>
                     <td>{{ candidate.score|default('x') }}</td>
                     <td>{{ candidate.time.format('%i:%S') }}</td>
                 </tr>