diff --git a/tests/integration/Owncloud/OcisPhpSdk/DriveTest.php b/tests/integration/Owncloud/OcisPhpSdk/DriveTest.php
index 24a352e3..e53d3328 100644
--- a/tests/integration/Owncloud/OcisPhpSdk/DriveTest.php
+++ b/tests/integration/Owncloud/OcisPhpSdk/DriveTest.php
@@ -298,7 +298,7 @@ public function testSetExpirationDate(): void
         $this->assertInstanceOf(SharingRole::class, $managerRole, "manager role not found");
         $tomorrow = new \DateTimeImmutable('tomorrow');
 
-        $oneYearTime = new \DateTimeImmutable(date('Y-m-d', strtotime('+1 year')));
+        $oneYearTime = new \DateTimeImmutable('+1 year');
 
         $this->drive->invite($marie, $managerRole, $tomorrow);
         $permissions = $this->drive->getPermissions();
diff --git a/tests/integration/Owncloud/OcisPhpSdk/ShareCreatedModifyTest.php b/tests/integration/Owncloud/OcisPhpSdk/ShareCreatedModifyTest.php
index db6c4e75..1fc3d12c 100644
--- a/tests/integration/Owncloud/OcisPhpSdk/ShareCreatedModifyTest.php
+++ b/tests/integration/Owncloud/OcisPhpSdk/ShareCreatedModifyTest.php
@@ -198,7 +198,7 @@ public function testUpdateExpirationDate(): void
         $tomorrow = new \DateTimeImmutable('tomorrow');
         $shareFromInvite = $this->fileToShare->invite($this->einstein, $this->viewerRole, $tomorrow);
 
-        $oneYearTime = new \DateTimeImmutable(date('Y-m-d', strtotime('+1 year')));
+        $oneYearTime = new \DateTimeImmutable('+1 year');
         $shareFromInvite->setExpiration($oneYearTime);
         $sharedByMeShares = $this->ocis->getSharedByMe();
         $this->assertEquals(
diff --git a/tests/integration/Owncloud/OcisPhpSdk/ShareGetShareByMeTest.php b/tests/integration/Owncloud/OcisPhpSdk/ShareGetShareByMeTest.php
index f185c0e4..173a59cc 100644
--- a/tests/integration/Owncloud/OcisPhpSdk/ShareGetShareByMeTest.php
+++ b/tests/integration/Owncloud/OcisPhpSdk/ShareGetShareByMeTest.php
@@ -77,7 +77,7 @@ public function testGetShareLinkByMe(): void
     {
         $this->sharedResource->createSharingLink(
             SharingLinkType::VIEW,
-            new \DateTimeImmutable(date('Y', strtotime('+1 year'))),
+            new \DateTimeImmutable('+1 year'),
             self::VALID_LINK_PASSWORD,
             '',
         );
@@ -105,7 +105,7 @@ public function testGetShareAndShareLinkByMe(): void
         $this->sharedResource->invite($this->einstein, $this->editorRole);
         $this->sharedResource->createSharingLink(
             SharingLinkType::VIEW,
-            new \DateTimeImmutable(date('Y', strtotime('+1 year'))),
+            new \DateTimeImmutable('+1 year'),
             self::VALID_LINK_PASSWORD,
             '',
         );