diff --git a/.changes/unreleased/DX-20260309-131710.yaml b/.changes/unreleased/DX-20260309-131710.yaml
new file mode 100644
index 000000000..865c1fe6f
--- /dev/null
+++ b/.changes/unreleased/DX-20260309-131710.yaml
@@ -0,0 +1,7 @@
+kind: DX
+body: Add seeds in DataFixtures and in some tests to avoid random test failures
+time: 2026-03-09T13:17:10.915852317+01:00
+custom:
+    Issue: "504"
+    MR: "970"
+    SchemaChange: No schema change
diff --git a/config/packages/nelmio_alice.yaml b/config/packages/nelmio_alice.yaml
index e82c32982..e6e912228 100644
--- a/config/packages/nelmio_alice.yaml
+++ b/config/packages/nelmio_alice.yaml
@@ -8,5 +8,6 @@ when@dev: &dev
             - 'file'
             - 'md5'
             - 'sha1'
+        seed: 1234567890
 
 when@test: *dev
diff --git a/src/Bundle/ChillActivityBundle/DataFixtures/ORM/LoadActivity.php b/src/Bundle/ChillActivityBundle/DataFixtures/ORM/LoadActivity.php
index 80c1e4254..8736e78f5 100644
--- a/src/Bundle/ChillActivityBundle/DataFixtures/ORM/LoadActivity.php
+++ b/src/Bundle/ChillActivityBundle/DataFixtures/ORM/LoadActivity.php
@@ -33,6 +33,7 @@ class LoadActivity extends AbstractFixture implements OrderedFixtureInterface
 
     public function __construct(private readonly EntityManagerInterface $em)
     {
+        mt_srand(123456789);
         $this->faker = FakerFactory::create('fr_FR');
     }
 
@@ -48,7 +49,7 @@ class LoadActivity extends AbstractFixture implements OrderedFixtureInterface
             ->findAll();
 
         foreach ($persons as $person) {
-            $activityNbr = random_int(0, 3);
+            $activityNbr = mt_rand(0, 3);
 
             for ($i = 0; $i < $activityNbr; ++$i) {
                 $activity = $this->newRandomActivity($person);
@@ -73,7 +74,7 @@ class LoadActivity extends AbstractFixture implements OrderedFixtureInterface
 
         //      ->setAttendee($this->faker->boolean())
 
-        for ($i = 0; random_int(0, 4) > $i; ++$i) {
+        for ($i = 0; mt_rand(0, 4) > $i; ++$i) {
             $reason = $this->getRandomActivityReason();
 
             if (null !== $reason) {
diff --git a/src/Bundle/ChillAsideActivityBundle/src/DataFixtures/ORM/LoadAsideActivity.php b/src/Bundle/ChillAsideActivityBundle/src/DataFixtures/ORM/LoadAsideActivity.php
index a60398507..cb778ab1e 100644
--- a/src/Bundle/ChillAsideActivityBundle/src/DataFixtures/ORM/LoadAsideActivity.php
+++ b/src/Bundle/ChillAsideActivityBundle/src/DataFixtures/ORM/LoadAsideActivity.php
@@ -21,7 +21,10 @@ use Doctrine\Persistence\ObjectManager;
 
 class LoadAsideActivity extends Fixture implements DependentFixtureInterface
 {
-    public function __construct(private readonly UserRepository $userRepository) {}
+    public function __construct(private readonly UserRepository $userRepository)
+    {
+        mt_srand(123456789);
+    }
 
     public function getDependencies(): array
     {
@@ -47,7 +50,7 @@ class LoadAsideActivity extends Fixture implements DependentFixtureInterface
                     $this->getReference('aside_activity_category_0', AsideActivityCategory::class)
                 )
                 ->setDate((new \DateTimeImmutable('today'))
-                    ->sub(new \DateInterval('P'.\random_int(1, 100).'D')));
+                    ->sub(new \DateInterval('P'.\mt_rand(1, 100).'D')));
 
             $manager->persist($activity);
         }
diff --git a/src/Bundle/ChillCustomFieldsBundle/DataFixtures/ORM/LoadOption.php b/src/Bundle/ChillCustomFieldsBundle/DataFixtures/ORM/LoadOption.php
index 4da28baac..87cf46024 100644
--- a/src/Bundle/ChillCustomFieldsBundle/DataFixtures/ORM/LoadOption.php
+++ b/src/Bundle/ChillCustomFieldsBundle/DataFixtures/ORM/LoadOption.php
@@ -41,6 +41,7 @@ class LoadOption extends AbstractFixture implements OrderedFixtureInterface
 
     public function __construct()
     {
+        mt_srand(123456789);
         $this->fakerFr = \Faker\Factory::create('fr_FR');
         $this->fakerEn = \Faker\Factory::create('en_EN');
         $this->fakerNl = \Faker\Factory::create('nl_NL');
@@ -104,7 +105,7 @@ class LoadOption extends AbstractFixture implements OrderedFixtureInterface
             $manager->persist($parent);
 
             // Load children
-            $expected_nb_children = random_int(10, 50);
+            $expected_nb_children = mt_rand(10, 50);
 
             for ($i = 0; $i < $expected_nb_children; ++$i) {
                 $companyName = $this->fakerFr->company;
@@ -144,7 +145,7 @@ class LoadOption extends AbstractFixture implements OrderedFixtureInterface
             $manager->persist($parent);
 
             // Load children
-            $expected_nb_children = random_int(10, 50);
+            $expected_nb_children = mt_rand(10, 50);
 
             for ($i = 0; $i < $expected_nb_children; ++$i) {
                 $manager->persist($this->createChildOption($parent, [
diff --git a/src/Bundle/ChillEventBundle/DataFixtures/ORM/LoadParticipation.php b/src/Bundle/ChillEventBundle/DataFixtures/ORM/LoadParticipation.php
index 94167f6b8..c5d7e37fb 100644
--- a/src/Bundle/ChillEventBundle/DataFixtures/ORM/LoadParticipation.php
+++ b/src/Bundle/ChillEventBundle/DataFixtures/ORM/LoadParticipation.php
@@ -34,6 +34,7 @@ class LoadParticipation extends AbstractFixture implements OrderedFixtureInterfa
 
     public function __construct()
     {
+        mt_srand(123456789);
         $this->faker = \Faker\Factory::create('fr_FR');
     }
 
@@ -45,7 +46,7 @@ class LoadParticipation extends AbstractFixture implements OrderedFixtureInterfa
         for ($i = 0; $i < $expectedNumber; ++$i) {
             $event = (new Event())
                 ->setDate($this->faker->dateTimeBetween('-2 years', '+6 months'))
-                ->setName($this->faker->words(random_int(2, 4), true))
+                ->setName($this->faker->words(mt_rand(2, 4), true))
                 ->setType($this->getReference(LoadEventTypes::$refs[array_rand(LoadEventTypes::$refs)], EventType::class))
                 ->setCenter($center)
                 ->setCircle(
@@ -78,7 +79,7 @@ class LoadParticipation extends AbstractFixture implements OrderedFixtureInterfa
 
             /** @var Person $person */
             foreach ($people as $person) {
-                $nb = random_int(0, 3);
+                $nb = mt_rand(0, 3);
 
                 for ($i = 0; $i < $nb; ++$i) {
                     $event = $events[array_rand($events)];
diff --git a/src/Bundle/ChillMainBundle/DataFixtures/ORM/LoadAddressReferences.php b/src/Bundle/ChillMainBundle/DataFixtures/ORM/LoadAddressReferences.php
index 1c71e17cb..55e52b65e 100644
--- a/src/Bundle/ChillMainBundle/DataFixtures/ORM/LoadAddressReferences.php
+++ b/src/Bundle/ChillMainBundle/DataFixtures/ORM/LoadAddressReferences.php
@@ -31,6 +31,7 @@ class LoadAddressReferences extends AbstractFixture implements ContainerAwareInt
 
     public function __construct()
     {
+        mt_srand(123456789);
         $this->faker = \Faker\Factory::create('fr_FR');
     }
 
@@ -67,7 +68,7 @@ class LoadAddressReferences extends AbstractFixture implements ContainerAwareInt
 
         $ar->setRefId($this->faker->numerify('ref-id-######'));
         $ar->setStreet($this->faker->streetName);
-        $ar->setStreetNumber((string) random_int(0, 199));
+        $ar->setStreetNumber((string) mt_rand(0, 199));
         $ar->setPoint($this->getRandomPoint());
         $ar->setPostcode($this->getReference(
             LoadPostalCodes::$refs[array_rand(LoadPostalCodes::$refs)],
@@ -88,8 +89,8 @@ class LoadAddressReferences extends AbstractFixture implements ContainerAwareInt
     {
         $lonBrussels = 4.35243;
         $latBrussels = 50.84676;
-        $lon = $lonBrussels + 0.01 * random_int(-5, 5);
-        $lat = $latBrussels + 0.01 * random_int(-5, 5);
+        $lon = $lonBrussels + 0.01 * mt_rand(-5, 5);
+        $lat = $latBrussels + 0.01 * mt_rand(-5, 5);
 
         return Point::fromLonLat($lon, $lat);
     }
diff --git a/src/Bundle/ChillPersonBundle/DataFixtures/Helper/RandomPersonHelperTrait.php b/src/Bundle/ChillPersonBundle/DataFixtures/Helper/RandomPersonHelperTrait.php
index 942f6cc5a..dfe6b37ad 100644
--- a/src/Bundle/ChillPersonBundle/DataFixtures/Helper/RandomPersonHelperTrait.php
+++ b/src/Bundle/ChillPersonBundle/DataFixtures/Helper/RandomPersonHelperTrait.php
@@ -34,7 +34,7 @@ trait RandomPersonHelperTrait
         return $qb
             ->select('p')
             ->setMaxResults(1)
-            ->setFirstResult(\random_int(0, $this->nbOfPersons))
+            ->setFirstResult(\mt_rand(0, $this->nbOfPersons))
             ->getQuery()
             ->getSingleResult();
     }
diff --git a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadCustomFields.php b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadCustomFields.php
index 5bff01f20..058c80c39 100644
--- a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadCustomFields.php
+++ b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadCustomFields.php
@@ -37,7 +37,9 @@ class LoadCustomFields extends AbstractFixture implements OrderedFixtureInterfac
         private readonly EntityManagerInterface $entityManager,
         private readonly CustomFieldChoice $customFieldChoice,
         private readonly CustomFieldText $customFieldText,
-    ) {}
+    ) {
+        mt_srand(123456789);
+    }
 
     // put your code here
     public function getOrder(): int
@@ -78,12 +80,12 @@ class LoadCustomFields extends AbstractFixture implements OrderedFixtureInterfac
         // select a set of people and add data
         foreach ($personIds as $id) {
             // add info on 1 person on 2
-            if (1 === random_int(0, 1)) {
+            if (1 === mt_rand(0, 1)) {
                 /** @var Person $person */
                 $person = $manager->getRepository(Person::class)->find($id);
                 $person->setCFData([
                     'remarques' => $this->createCustomFieldText()
-                        ->serialize($faker->text(random_int(150, 250)), $this->cfText),
+                        ->serialize($faker->text(mt_rand(150, 250)), $this->cfText),
                     'document-d-identite' => $this->createCustomFieldChoice()
                         ->serialize([$choices[array_rand($choices)]], $this->cfChoice),
                 ]);
diff --git a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadHousehold.php b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadHousehold.php
index fdefa5dc8..bedf29002 100644
--- a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadHousehold.php
+++ b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadHousehold.php
@@ -36,6 +36,7 @@ class LoadHousehold extends Fixture implements DependentFixtureInterface
 
     public function __construct(private readonly MembersEditorFactory $editorFactory, private readonly EntityManagerInterface $em)
     {
+        mt_srand(123456789);
         $this->loader = new NativeLoader();
     }
 
@@ -72,12 +73,12 @@ class LoadHousehold extends Fixture implements DependentFixtureInterface
 
     private function addAddressToHousehold(Household $household, \DateTimeImmutable $date, ObjectManager $manager)
     {
-        if (\random_int(0, 10) > 8) {
+        if (\mt_rand(0, 10) > 8) {
             //  20% of household without address
             return;
         }
 
-        $nb = \random_int(1, 6);
+        $nb = \mt_rand(1, 6);
 
         $i = 0;
 
@@ -85,15 +86,15 @@ class LoadHousehold extends Fixture implements DependentFixtureInterface
             $address = $this->createAddress();
             $address->setValidFrom(\DateTime::createFromImmutable($date));
 
-            if (\random_int(0, 20) < 1) {
-                $date = $date->add(new \DateInterval('P'.\random_int(8, 52).'W'));
+            if (\mt_rand(0, 20) < 1) {
+                $date = $date->add(new \DateInterval('P'.\mt_rand(8, 52).'W'));
                 $address->setValidTo(\DateTime::createFromImmutable($date));
             }
 
             $household->addAddress($address);
             $manager->persist($address);
 
-            $date = $date->add(new \DateInterval('P'.\random_int(8, 52).'W'));
+            $date = $date->add(new \DateInterval('P'.\mt_rand(8, 52).'W'));
             ++$i;
         }
     }
@@ -127,7 +128,7 @@ class LoadHousehold extends Fixture implements DependentFixtureInterface
             $k = 0;
 
             foreach ($this->getRandomPersons(1, 3) as $person) {
-                $date = $startDate->add(new \DateInterval('P'.\random_int(1, 200).'W'));
+                $date = $startDate->add(new \DateInterval('P'.\mt_rand(1, 200).'W'));
                 $position = $this->getReference(LoadHouseholdPosition::ADULT, Position::class);
 
                 $movement->addMovement($date, $person, $position, 0 === $k, 'self generated');
@@ -136,7 +137,7 @@ class LoadHousehold extends Fixture implements DependentFixtureInterface
 
             // load children
             foreach ($this->getRandomPersons(0, 3) as $person) {
-                $date = $startDate->add(new \DateInterval('P'.\random_int(1, 200).'W'));
+                $date = $startDate->add(new \DateInterval('P'.\mt_rand(1, 200).'W'));
                 $position = $this->getReference(LoadHouseholdPosition::CHILD, Position::class);
 
                 $movement->addMovement($date, $person, $position, 0 === $k, 'self generated');
@@ -145,7 +146,7 @@ class LoadHousehold extends Fixture implements DependentFixtureInterface
 
             // load children out
             foreach ($this->getRandomPersons(0, 2) as $person) {
-                $date = $startDate->add(new \DateInterval('P'.\random_int(1, 200).'W'));
+                $date = $startDate->add(new \DateInterval('P'.\mt_rand(1, 200).'W'));
                 $position = $this->getReference(LoadHouseholdPosition::CHILD_OUT, Position::class);
 
                 $movement->addMovement($date, $person, $position, 0 === $k, 'self generated');
@@ -169,7 +170,7 @@ class LoadHousehold extends Fixture implements DependentFixtureInterface
     {
         $persons = [];
 
-        $nb = \random_int($min, $max);
+        $nb = \mt_rand($min, $max);
 
         for ($i = 0; $i < $nb; ++$i) {
             $personId = \array_pop($this->personIds)['id'];
diff --git a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadPeople.php b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadPeople.php
index 753094ec1..b048ba3d4 100644
--- a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadPeople.php
+++ b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadPeople.php
@@ -240,6 +240,7 @@ class LoadPeople extends AbstractFixture implements ContainerAwareInterface, Ord
         protected UserRepository $userRepository,
         protected GenderRepository $genderRepository,
     ) {
+        mt_srand(123456789);
         $this->faker = Factory::create('fr_FR');
         $this->faker->addProvider($this);
         $this->loader = new NativeLoader($this->faker);
@@ -273,7 +274,7 @@ class LoadPeople extends AbstractFixture implements ContainerAwareInterface, Ord
             $this->cacheCountries = $this->countryRepository->findAll();
         }
 
-        if (\random_int(0, 100) > $nullPercentage) {
+        if (\mt_rand(0, 100) > $nullPercentage) {
             return null;
         }
 
@@ -289,7 +290,7 @@ class LoadPeople extends AbstractFixture implements ContainerAwareInterface, Ord
             $this->cacheGenders = $this->genderRepository->findByActiveOrdered();
         }
 
-        if (\random_int(0, 100) > $nullPercentage) {
+        if (\mt_rand(0, 100) > $nullPercentage) {
             return null;
         }
 
@@ -307,7 +308,7 @@ class LoadPeople extends AbstractFixture implements ContainerAwareInterface, Ord
             $this->cacheMaritalStatuses = $this->maritalStatusRepository->findAll();
         }
 
-        if (\random_int(0, 100) > $nullPercentage) {
+        if (\mt_rand(0, 100) > $nullPercentage) {
             return null;
         }
 
@@ -352,7 +353,7 @@ class LoadPeople extends AbstractFixture implements ContainerAwareInterface, Ord
         $accompanyingPeriod = new AccompanyingPeriod(
             (new \DateTime())
                 ->sub(
-                    new \DateInterval('P'.\random_int(0, 180).'D')
+                    new \DateInterval('P'.\mt_rand(0, 180).'D')
                 )
         );
         $accompanyingPeriod->setCreatedBy($this->getRandomUser())
@@ -360,7 +361,7 @@ class LoadPeople extends AbstractFixture implements ContainerAwareInterface, Ord
         $person->addAccompanyingPeriod($accompanyingPeriod);
         $accompanyingPeriod->addSocialIssue($this->getRandomSocialIssue());
 
-        if (\random_int(0, 10) > 3) {
+        if (\mt_rand(0, 10) > 3) {
             // always add social scope:
             $accompanyingPeriod->addScope($this->getReference('scope_social', Scope::class));
             $origin = $this->getReference(LoadAccompanyingPeriodOrigin::ACCOMPANYING_PERIOD_ORIGIN, AccompanyingPeriod\Origin::class);
diff --git a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadRelationships.php b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadRelationships.php
index dcbb3a4c3..957074014 100644
--- a/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadRelationships.php
+++ b/src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadRelationships.php
@@ -25,7 +25,10 @@ class LoadRelationships extends Fixture implements DependentFixtureInterface
 {
     use PersonRandomHelper;
 
-    public function __construct(private readonly EntityManagerInterface $em) {}
+    public function __construct(private readonly EntityManagerInterface $em)
+    {
+        mt_srand(123456789);
+    }
 
     public function getDependencies(): array
     {
@@ -47,8 +50,8 @@ class LoadRelationships extends Fixture implements DependentFixtureInterface
                 ->setFromPerson($this->getRandomPerson($this->em))
                 ->setToPerson($this->getRandomPerson($this->em))
                 ->setRelation($this->getReference(LoadRelations::RELATION_KEY.
-                    random_int(0, \count(LoadRelations::RELATIONS) - 1), Relation::class))
-                ->setReverse((bool) random_int(0, 1))
+                    mt_rand(0, \count(LoadRelations::RELATIONS) - 1), Relation::class))
+                ->setReverse((bool) mt_rand(0, 1))
                 ->setCreatedBy($user)
                 ->setUpdatedBy($user)
                 ->setCreatedAt($date)
diff --git a/src/Bundle/ChillPersonBundle/Tests/Controller/RelationshipApiControllerTest.php b/src/Bundle/ChillPersonBundle/Tests/Controller/RelationshipApiControllerTest.php
index 65f2e60a6..ded2e4b1b 100644
--- a/src/Bundle/ChillPersonBundle/Tests/Controller/RelationshipApiControllerTest.php
+++ b/src/Bundle/ChillPersonBundle/Tests/Controller/RelationshipApiControllerTest.php
@@ -55,6 +55,9 @@ final class RelationshipApiControllerTest extends WebTestCase
 
     public static function personProvider(): array
     {
+        // fix a seed to avoid random errors
+        mt_srand(1234588755);
+
         self::bootKernel();
         $em = self::getContainer()->get(EntityManagerInterface::class);
         $personIdHavingRelation = $em->createQueryBuilder()
@@ -116,6 +119,9 @@ final class RelationshipApiControllerTest extends WebTestCase
 
     public static function relationProvider(): array
     {
+        // fix a seed to avoid random errors
+        mt_srand(1234588755);
+
         self::bootKernel();
         $em = self::getContainer()->get(EntityManagerInterface::class);
         $personIdWithoutRelations = $em->createQueryBuilder()
@@ -144,6 +150,8 @@ final class RelationshipApiControllerTest extends WebTestCase
                 ->findAll();
         }
 
-        return self::$relations[\array_rand(self::$relations)];
+        $keys = array_keys(self::$relations);
+
+        return self::$relations[mt_rand(0, \count($keys) - 1)];
     }
 }
diff --git a/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadCustomField.php b/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadCustomField.php
index 707133890..c346f2bff 100644
--- a/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadCustomField.php
+++ b/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadCustomField.php
@@ -22,6 +22,11 @@ use Doctrine\Persistence\ObjectManager;
  */
 class LoadCustomField extends AbstractFixture implements OrderedFixtureInterface
 {
+    public function __construct()
+    {
+        mt_srand(123456789);
+    }
+
     public function getOrder(): int
     {
         return 15001;
@@ -67,15 +72,15 @@ class LoadCustomField extends AbstractFixture implements OrderedFixtureInterface
         ];
 
         for ($i = 0; 25 >= $i; ++$i) {
-            $cFType = $cFTypes[random_int(0, \count($cFTypes) - 1)];
+            $cFType = $cFTypes[mt_rand(0, \count($cFTypes) - 1)];
 
             $customField = (new CustomField())
                 ->setSlug("cf_report_{$i}")
                 ->setType($cFType['type'])
                 ->setOptions($cFType['options'])
                 ->setName(['fr' => "CustomField {$i}"])
-                ->setOrdering(random_int(0, 1000) / 1000)
-                ->setCustomFieldsGroup($this->getReference('cf_group_report_'.random_int(0, 3), CustomFieldsGroup::class));
+                ->setOrdering(mt_rand(0, 1000) / 1000)
+                ->setCustomFieldsGroup($this->getReference('cf_group_report_'.mt_rand(0, 3), CustomFieldsGroup::class));
 
             $manager->persist($customField);
         }
diff --git a/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadReports.php b/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadReports.php
index 3519ef4cd..ef966805e 100644
--- a/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadReports.php
+++ b/src/Bundle/ChillReportBundle/DataFixtures/ORM/LoadReports.php
@@ -35,6 +35,7 @@ final class LoadReports extends AbstractFixture implements OrderedFixtureInterfa
     public function __construct(
         private readonly EntityManagerInterface $entityManager,
     ) {
+        mt_srand(123456789);
         $this->faker = FakerFactory::create('fr_FR');
     }
 
@@ -83,7 +84,7 @@ final class LoadReports extends AbstractFixture implements OrderedFixtureInterfa
             $report = (new Report())
                 ->setPerson($person)
                 ->setCFGroup(
-                    random_int(0, 10) > 5 ?
+                    mt_rand(0, 10) > 5 ?
                             $this->getReference('cf_group_report_logement', CustomFieldsGroup::class) :
                             $this->getReference('cf_group_report_education', CustomFieldsGroup::class)
                 )
@@ -106,7 +107,7 @@ final class LoadReports extends AbstractFixture implements OrderedFixtureInterfa
             // set date. 30% of the dates are 2015-05-01
             $expectedDate = new \DateTime('2015-01-05');
 
-            if (random_int(0, 100) < 30) {
+            if (mt_rand(0, 100) < 30) {
                 $report->setDate($expectedDate);
             } else {
                 $report->setDate($this->faker->dateTimeBetween('-1 year', 'now')
@@ -150,7 +151,7 @@ final class LoadReports extends AbstractFixture implements OrderedFixtureInterfa
         $selectedPeople = [];
 
         foreach ($people as $person) {
-            if (random_int(0, 100) < $percentage) {
+            if (mt_rand(0, 100) < $percentage) {
                 $selectedPeople[] = $person;
             }
         }
@@ -178,7 +179,7 @@ final class LoadReports extends AbstractFixture implements OrderedFixtureInterfa
         $picked = [];
 
         if ($multiple) {
-            $numberSelected = random_int(1, \count($choices) - 1);
+            $numberSelected = mt_rand(1, \count($choices) - 1);
 
             for ($i = 0; $i < $numberSelected; ++$i) {
                 $picked[] = $this->pickChoice($choices);
diff --git a/src/Bundle/ChillThirdPartyBundle/DataFixtures/ORM/LoadThirdParty.php b/src/Bundle/ChillThirdPartyBundle/DataFixtures/ORM/LoadThirdParty.php
index dc4b5472b..8ed008ddf 100644
--- a/src/Bundle/ChillThirdPartyBundle/DataFixtures/ORM/LoadThirdParty.php
+++ b/src/Bundle/ChillThirdPartyBundle/DataFixtures/ORM/LoadThirdParty.php
@@ -30,6 +30,7 @@ class LoadThirdParty extends Fixture implements DependentFixtureInterface
 
     public function __construct()
     {
+        mt_srand(123456789);
         $this->phoneNumberUtil = PhoneNumberUtil::getInstance();
     }
 
@@ -68,7 +69,7 @@ class LoadThirdParty extends Fixture implements DependentFixtureInterface
             static fn ($a) => $a['ref'],
             LoadCenters::$centers
         );
-        $number = random_int(1, \count($references));
+        $number = mt_rand(1, \count($references));
 
         if (1 === $number) {
             yield $this->getReference($references[array_rand($references)], Center::class);