diff --git a/backend/manage.py b/backend/manage.py
index b972b77..8109f69 100644
--- a/backend/manage.py
+++ b/backend/manage.py
@@ -76,6 +76,8 @@ manager.add_command('checkdb', CheckDB())
 class RunTests(Command):
     """Seed the db """
     def run(self):
+        if not args.test:
+            raise Exception("Les tests doivent etre lancés en config de test")
         test_loader = unittest.defaultTestLoader
         test_runner = unittest.TextTestRunner()
         test_suite = test_loader.discover('tests')
diff --git a/backend/requirements/common.txt b/backend/requirements/common.txt
index 6325466..ba02b3f 100644
--- a/backend/requirements/common.txt
+++ b/backend/requirements/common.txt
@@ -4,4 +4,4 @@ flask-sqlalchemy < 2.2
 flask-restful < 0.4
 mysqlclient < 1.4
 pdfjinja < 1.1
-python-pypdf2 < 1.27
+pypdf2
diff --git a/backend/tox.ini b/backend/tox.ini
index 3b613fb..87ff2a7 100644
--- a/backend/tox.ini
+++ b/backend/tox.ini
@@ -6,7 +6,7 @@ exclude = .git, app/static, app/templates, tox.ini
 skipsdist = True
 
 [testenv]
-commands = coverage run --source app/api,app/tools manage.py -t runtests
+commands = coverage run --source app/api,app/tools --omit app/api/exampleapi.py manage.py -t runtests
     coverage report -m
     coverage xml
     coverage html