diff --git a/docs/specs/validator-api.yml b/docs/specs/validator-api.yml
index 5093139..41aa499 100644
--- a/docs/specs/validator-api.yml
+++ b/docs/specs/validator-api.yml
@@ -6,7 +6,7 @@ info:
   contact:
     name: IGNF/validator
     url: "https://github.com/IGNF/validator/issues"
-  version: "0.5.3"
+  version: "0.5.5"
   title: "API Validator"
   license:
     name: "AGPL-3.0-or-later"
diff --git a/src/Repository/ValidationRepository.php b/src/Repository/ValidationRepository.php
index 03a866a..1522132 100755
--- a/src/Repository/ValidationRepository.php
+++ b/src/Repository/ValidationRepository.php
@@ -73,4 +73,17 @@ public function findAllToBeArchived(DateTime $expiryDate)
             ->getResult()
         ;
     }
+
+    /**
+     * Drop schema corresponding to input validation
+     *
+     * @param Validation $validation
+     * @return boolean
+     */
+    public function dropSchema(Validation $validation)
+    {
+        $sql = sprintf('DROP SCHEMA IF EXISTS "validation%s" CASCADE', $validation->getUid());
+        $reponse = $this->getEntityManager()->getConnection()->executeQuery($sql);
+        return $reponse->rowCount() != 0;
+    }
 }
diff --git a/src/Validation/ValidationManager.php b/src/Validation/ValidationManager.php
index 4ac5951..5492c77 100644
--- a/src/Validation/ValidationManager.php
+++ b/src/Validation/ValidationManager.php
@@ -4,6 +4,7 @@
 
 use App\Entity\Validation;
 use App\Exception\ZipArchiveValidationException;
+use App\Repository\ValidationRepository;
 use App\Storage\ValidationsStorage;
 use Doctrine\ORM\EntityManagerInterface;
 use Psr\Log\LoggerInterface;
@@ -40,6 +41,11 @@ class ValidationManager
      */
     private $zipArchiveValidator;
 
+    /**
+     * @var ValidationRepository
+     */
+    private $validationRepository;
+
     /**
      * Current validation (in order to handle SIGTERM)
      * @var Validation
@@ -51,13 +57,15 @@ public function __construct(
         ValidationsStorage $storage,
         ValidatorCLI $validatorCli,
         ZipArchiveValidator $zipArchiveValidator,
-        LoggerInterface $logger
+        LoggerInterface $logger,
+        ValidationRepository $validationRepository
     ) {
         $this->em = $em;
         $this->storage = $storage;
         $this->validatorCli = $validatorCli;
         $this->zipArchiveValidator = $zipArchiveValidator;
         $this->logger = $logger;
+        $this->validationRepository = $validationRepository;
     }
 
     /**
@@ -96,6 +104,10 @@ public function archive(Validation $validation)
         if ($this->storage->getStorage()->directoryExists($outputDirectory)) {
             $this->storage->getStorage()->deleteDirectory($outputDirectory);
         }
+        $this->logger->info('Validation[{uid}] : drop validation schema', [
+            'uid' => $validation->getUid(),
+        ]);
+        $this->validationRepository->dropSchema($validation);
         $this->logger->info('Validation[{uid}] : archive removing all files : completed', [
             'uid' => $validation->getUid(),
             'status' => Validation::STATUS_ARCHIVED,