diff --git a/src/DataFixtures/AllFixtures.php b/src/DataFixtures/AllFixtures.php
new file mode 100644
index 00000000..ab19b18c
--- /dev/null
+++ b/src/DataFixtures/AllFixtures.php
@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\DataFixtures;
+
+use Doctrine\Bundle\FixturesBundle\Fixture;
+use Doctrine\Common\DataFixtures\DependentFixtureInterface;
+use Doctrine\Persistence\ObjectManager;
+
+/**
+ * This fixture makes sure that all data is loaded.
+ *
+ * @codeCoverageIgnore
+ */
+class AllFixtures extends Fixture implements DependentFixtureInterface
+{
+    /**
+     * @return class-string[]
+     */
+    public function getDependencies()
+    {
+        return [
+            UserFixtures::class,
+            CustomerFixtures::class,
+            TagFixtures::class,
+            TimesheetFixtures::class,
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function load(ObjectManager $manager)
+    {
+        // this is a fake fixture class, it only exists to make developers life easier
+        // if we use the DependentFixtureInterface on the TimesheetFixture directly,
+        // we cannot load
+        // bin/console doctrine:fixtures:load --append --group=timesheet
+        // without executing all dependent fixtures
+    }
+}
diff --git a/src/DataFixtures/TeamFixtures.php b/src/DataFixtures/TeamFixtures.php
index ac5b1c23..960b90b0 100644
--- a/src/DataFixtures/TeamFixtures.php
+++ b/src/DataFixtures/TeamFixtures.php
@@ -13,7 +13,6 @@ use App\Entity\Project;
 use App\Entity\Team;
 use App\Entity\User;
 use Doctrine\Bundle\FixturesBundle\Fixture;
-use Doctrine\Common\DataFixtures\DependentFixtureInterface;
 use Doctrine\Persistence\ObjectManager;
 use Faker\Factory;
 
@@ -26,20 +25,15 @@ use Faker\Factory;
  *
  * @codeCoverageIgnore
  */
-class TeamFixtures extends Fixture implements DependentFixtureInterface
+class TeamFixtures extends Fixture
 {
     public const AMOUNT_TEAMS = 10;
     public const MAX_USERS_PER_TEAM = 15;
     public const MAX_PROJECTS_PER_TEAM = 5;
 
-    /**
-     * @return string[]
-     */
-    public function getDependencies()
+    public static function getGroups(): array
     {
-        return [
-            UserFixtures::class,
-        ];
+        return ['users', 'team'];
     }
 
     /**
diff --git a/src/DataFixtures/TimesheetFixtures.php b/src/DataFixtures/TimesheetFixtures.php
index 45cf7450..dff2e8e4 100644
--- a/src/DataFixtures/TimesheetFixtures.php
+++ b/src/DataFixtures/TimesheetFixtures.php
@@ -18,7 +18,6 @@ use App\Entity\UserPreference;
 use App\Timesheet\Util;
 use Doctrine\Bundle\FixturesBundle\Fixture;
 use Doctrine\Bundle\FixturesBundle\FixtureGroupInterface;
-use Doctrine\Common\DataFixtures\DependentFixtureInterface;
 use Doctrine\Persistence\ObjectManager;
 use Faker\Factory;
 
@@ -26,20 +25,20 @@ use Faker\Factory;
  * Defines the sample data to load in the database when running the unit and
  * functional tests or while development.
  *
- * Execute this command to load the data:
+ * Execute this command to load add fixture data:
  * bin/console doctrine:fixtures:load
  *
+ * Or simply append it to your running installation:
+ * bin/console doctrine:fixtures:load --append --group=timesheet
+ *
  * @codeCoverageIgnore
  */
-class TimesheetFixtures extends Fixture implements DependentFixtureInterface, FixtureGroupInterface
+class TimesheetFixtures extends Fixture implements FixtureGroupInterface
 {
     public const MIN_TIMESHEETS_PER_USER = 50;
     public const MAX_TIMESHEETS_PER_USER = 500;
-    public const MAX_TIMESHEETS_TOTAL = 5000;
+    public const MAX_TIMESHEETS_TOTAL = 200;
     public const MAX_RUNNING_TIMESHEETS_PER_USER = 1;
-    public const TIMERANGE_BEGIN_DAYS = 1; // yesterday
-    public const TIMERANGE_END_DAYS = 1095; // 3 years
-    public const TIMERANGE_RUNNING = 1047; // in minutes = 17:45 hours
     public const MIN_MINUTES_PER_ENTRY = 15;
     public const MAX_MINUTES_PER_ENTRY = 840; // 14h
     public const MAX_DESCRIPTION_LENGTH = 200;
@@ -49,23 +48,16 @@ class TimesheetFixtures extends Fixture implements DependentFixtureInterface, Fi
 
     public const BATCH_SIZE = 100;
 
-    /**
-     * @return class-string[]
-     */
-    public function getDependencies()
-    {
-        return [
-            UserFixtures::class,
-            CustomerFixtures::class,
-            TagFixtures::class,
-        ];
-    }
-
     public static function getGroups(): array
     {
         return ['timesheet'];
     }
 
+    public function getRandomFirstDay(): \DateTime
+    {
+        return new \DateTime(rand(-1095, 14) . ' days');
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -218,8 +210,7 @@ class TimesheetFixtures extends Fixture implements DependentFixtureInterface, Fi
 
     private function createTimesheetEntry(User $user, Activity $activity, Project $project, ?string $description, bool $setEndDate)
     {
-        $start = new \DateTime();
-        $start = $start->modify('- ' . (rand(self::TIMERANGE_BEGIN_DAYS, self::TIMERANGE_END_DAYS)) . ' days');
+        $start = $this->getRandomFirstDay();
         $start = $start->modify('- ' . (rand(1, 86400)) . ' seconds');
         $start->setTimezone(new \DateTimeZone($user->getPreferenceValue(UserPreference::TIMEZONE, date_default_timezone_get())));
 
@@ -246,7 +237,7 @@ class TimesheetFixtures extends Fixture implements DependentFixtureInterface, Fi
         } else {
             // running entries should be short
             $newBegin = clone $entry->getBegin();
-            $newBegin->setTimestamp(time())->modify('- ' . rand(10, self::TIMERANGE_RUNNING) . ' minutes');
+            $newBegin->setTimestamp(time())->modify('- ' . rand(self::MIN_MINUTES_PER_ENTRY, self::MAX_MINUTES_PER_ENTRY) . ' minutes');
             $entry->setBegin($newBegin);
         }
 
diff --git a/src/DataFixtures/UserFixtures.php b/src/DataFixtures/UserFixtures.php
index 0797275c..5fdd80f1 100644
--- a/src/DataFixtures/UserFixtures.php
+++ b/src/DataFixtures/UserFixtures.php
@@ -12,6 +12,7 @@ namespace App\DataFixtures;
 use App\Entity\User;
 use App\Entity\UserPreference;
 use Doctrine\Bundle\FixturesBundle\Fixture;
+use Doctrine\Bundle\FixturesBundle\FixtureGroupInterface;
 use Doctrine\Persistence\ObjectManager;
 use Faker\Factory;
 use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
@@ -25,7 +26,7 @@ use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
  *
  * @codeCoverageIgnore
  */
-class UserFixtures extends Fixture
+class UserFixtures extends Fixture implements FixtureGroupInterface
 {
     public const DEFAULT_PASSWORD = 'kitten';
     public const DEFAULT_API_TOKEN = 'api_kitten';
@@ -63,6 +64,11 @@ class UserFixtures extends Fixture
         $this->loadTestUsers($manager);
     }
 
+    public static function getGroups(): array
+    {
+        return ['user', 'users'];
+    }
+
     /**
      * Default users for all test cases
      *
diff --git a/src/Widget/Type/PaginatedWorkingTimeChart.php b/src/Widget/Type/PaginatedWorkingTimeChart.php
index 3782fd09..d48b2091 100644
--- a/src/Widget/Type/PaginatedWorkingTimeChart.php
+++ b/src/Widget/Type/PaginatedWorkingTimeChart.php
@@ -76,10 +76,9 @@ final class PaginatedWorkingTimeChart extends SimpleWidget implements UserWidget
         $week = $options['week'];
 
         $weekBegin = ($dateTimeFactory->createDateTime())->setISODate($year, $week, 1)->setTime(0, 0, 0);
-        $weekEnd = ($dateTimeFactory->createDateTime())->setISODate($year, $week, 7)->setTime(23, 59, 59);
 
         $weekBegin = $dateTimeFactory->getStartOfWeek($weekBegin);
-        $weekEnd = $dateTimeFactory->getEndOfWeek($weekEnd);
+        $weekEnd = $dateTimeFactory->getEndOfWeek($weekBegin);
 
         $lastWeekInYear = $this->getLastWeekInYear($year);
         $lastWeekInLastYear = $this->getLastWeekInYear($year - 1);