diff --git a/tests/Invoice/Renderer/DebugRendererTest.php b/tests/Invoice/Renderer/DebugRendererTest.php
index 55e1565a..a0fe6d91 100644
--- a/tests/Invoice/Renderer/DebugRendererTest.php
+++ b/tests/Invoice/Renderer/DebugRendererTest.php
@@ -73,7 +73,7 @@ class DebugRendererTest extends TestCase
         self::assertEquals($begin->format('d'), $data['model']['query.day']);
         // TODO check values or formats?
         self::assertEquals('2020.08.12', $data['model']['invoice.first']);
-        self::assertEquals('2022.10.23', $data['model']['invoice.last']);
+        self::assertEquals('2021.03.12', $data['model']['invoice.last']);
     }
 
     protected function assertModelStructure(array $model, int $projectCounter = 0, int $activityCounter = 0)
diff --git a/tests/Invoice/Renderer/RendererTestTrait.php b/tests/Invoice/Renderer/RendererTestTrait.php
index dd1877a8..18a6fea7 100644
--- a/tests/Invoice/Renderer/RendererTestTrait.php
+++ b/tests/Invoice/Renderer/RendererTestTrait.php
@@ -141,8 +141,8 @@ trait RendererTestTrait
             ->setUser($user1)
             ->setActivity($activity)
             ->setProject($project)
-            ->setBegin(new \DateTime())
-            ->setEnd(new \DateTime())
+            ->setBegin(new \DateTime('2020-12-13 14:00:00'))
+            ->setEnd(new \DateTime('2020-12-13 15:00:00'))
             ->setMetaField((new TimesheetMeta())->setName('foo-timesheet')->setValue('bar-timesheet')->setIsVisible(true));
 
         $timesheet2 = new Timesheet();
@@ -178,8 +178,8 @@ trait RendererTestTrait
             ->setUser($user2)
             ->setActivity($activity)
             ->setProject($project)
-            ->setBegin(new \DateTime())
-            ->setEnd(new \DateTime())
+            ->setBegin(new \DateTime('2020-12-13 14:00:00'))
+            ->setEnd(new \DateTime('2020-12-13 14:06:40'))
             ->setDescription(
                 "foo\n" .
                 "foo\r\n" .
@@ -292,7 +292,7 @@ trait RendererTestTrait
             ->setActivity($activity)
             ->setProject($project)
             ->setBegin(new \DateTime('2020-08-12 18:00:00'))
-            ->setEnd(new \DateTime('2022-10-23 18:30:00'))
+            ->setEnd(new \DateTime('2021-03-12 18:30:00'))
         ;
 
         $entries = [$timesheet];