diff --git a/pom.xml b/pom.xml
index 728ab41..c14213d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
 
   <properties>
     <!-- https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/ -->
-    <jenkins.baseline>2.479</jenkins.baseline>
+    <jenkins.baseline>2.504</jenkins.baseline>
     <jenkins.version>${jenkins.baseline}.3</jenkins.version>
     <jenkins-test-harness.version>2545.va_5c4d760c7ef</jenkins-test-harness.version>
     <ban-junit4-imports.skip>false</ban-junit4-imports.skip>
@@ -40,7 +40,7 @@
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
         <artifactId>bom-${jenkins.baseline}.x</artifactId>
-        <version>5054.v620b_5d2b_d5e6</version>
+        <version>5888.vd99c2b_38128d</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/src/test/java/hudson/plugins/disk_usage/DiskUsageCalculationTest.java b/src/test/java/hudson/plugins/disk_usage/DiskUsageCalculationTest.java
index 44f22d7..abea8f0 100644
--- a/src/test/java/hudson/plugins/disk_usage/DiskUsageCalculationTest.java
+++ b/src/test/java/hudson/plugins/disk_usage/DiskUsageCalculationTest.java
@@ -4,6 +4,7 @@
  */
 package hudson.plugins.disk_usage;
 
+import static org.junit.jupiter.api.AssertionFailureBuilder.assertionFailure;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.time.Duration;
@@ -14,6 +15,7 @@
 import java.util.List;
 import java.util.concurrent.TimeUnit;
 import jenkins.util.Timer;
+import org.jspecify.annotations.Nullable;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -28,7 +30,7 @@ public class DiskUsageCalculationTest {
      * see @testReschedule()
      */
     @Test
-    void testScheduledExecutionTime() throws Exception {
+    void testScheduledExecutionTime() {
         GregorianCalendar calendar = new GregorianCalendar();
         calendar.add(Calendar.MINUTE, 10);
         int minute = calendar.get(Calendar.MINUTE);
@@ -39,9 +41,9 @@ void testScheduledExecutionTime() throws Exception {
             calculation.getLastTask().cancel();
         }
         long expectedNextExecution = calendar.getTimeInMillis();
-        assertEquals(0, calculation.scheduledLastInstanceExecutionTime(), 60000, "Scheduled time of disk usage calculation should 0, because calculation is not scheduled");
+        assertCloseEnough(0, calculation.scheduledLastInstanceExecutionTime(), 60000, "Scheduled time of disk usage calculation should 0, because calculation is not scheduled");
         Timer.get().schedule(calculation.getNewInstance(), calculation.getRecurrencePeriod(), TimeUnit.MILLISECONDS);
-        assertEquals(expectedNextExecution, calculation.scheduledLastInstanceExecutionTime(), 60000, "Scheduled time of disk usage calculation should be in 10 minutes");
+        assertCloseEnough(expectedNextExecution, calculation.scheduledLastInstanceExecutionTime(), 60000, "Scheduled time of disk usage calculation should be in 10 minutes");
 
         // scheduled time should be changed if configuration of cron is changed
         calendar.add(Calendar.MINUTE, 10);
@@ -49,7 +51,7 @@ void testScheduledExecutionTime() throws Exception {
         calculation.setCron(minute + " * * * *");
         calculation.reschedule();
         expectedNextExecution = calendar.getTimeInMillis();
-        assertEquals(expectedNextExecution, calculation.scheduledLastInstanceExecutionTime(), 60000, "Scheduled time of disk usage calculation should be changed");
+        assertCloseEnough(expectedNextExecution, calculation.scheduledLastInstanceExecutionTime(), 120_000, "Scheduled time of disk usage calculation should be changed");
 
     }
 
@@ -65,7 +67,7 @@ void testGetRecurrencePeriod() {
         TestDiskUsageCalculation calculation = new TestDiskUsageCalculation(minute + " * * * *");
         long period = calculation.getRecurrencePeriod();
         long expectedPeriod = calendar.getTimeInMillis() - System.currentTimeMillis();
-        assertEquals(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 minutes");
+        assertCloseEnough(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 minutes");
 
         // for hours
         calendar = new GregorianCalendar();
@@ -76,7 +78,7 @@ void testGetRecurrencePeriod() {
         calculation = new TestDiskUsageCalculation("0 " + hour + " * * *");
         period = calculation.getRecurrencePeriod();
         expectedPeriod = calendar.getTimeInMillis() - System.currentTimeMillis();
-        assertEquals(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 hours.");
+        assertCloseEnough(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 hours.");
 
         // for days
         calendar = new GregorianCalendar();
@@ -85,7 +87,7 @@ void testGetRecurrencePeriod() {
         calculation = new TestDiskUsageCalculation(calendar.get(Calendar.MINUTE) + " " + calendar.get(Calendar.HOUR_OF_DAY) + " " + day + " * *");
         period = calculation.getRecurrencePeriod();
         expectedPeriod = calendar.getTimeInMillis() - System.currentTimeMillis();
-        assertEquals(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 days.");
+        assertCloseEnough(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 days.");
 
         // for months
         calendar = new GregorianCalendar();
@@ -95,7 +97,7 @@ void testGetRecurrencePeriod() {
         period = calculation.getRecurrencePeriod();
         expectedPeriod = calendar.getTimeInMillis() - System.currentTimeMillis();
         calendar.setTimeInMillis(System.currentTimeMillis() + period);
-        assertEquals(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 months.");
+        assertCloseEnough(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 months.");
 
         // day of week
         calendar = new GregorianCalendar();
@@ -105,7 +107,7 @@ void testGetRecurrencePeriod() {
         period = calculation.getRecurrencePeriod();
         expectedPeriod = calendar.getTimeInMillis() - System.currentTimeMillis();
         calendar.setTimeInMillis(System.currentTimeMillis() + period);
-        assertEquals(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 months.");
+        assertCloseEnough(expectedPeriod, period, 60000, "Disk usage calculation should be executed accurately in 2 months.");
 
     }
 
@@ -116,7 +118,7 @@ void testGetRecurrencePeriod() {
      * see @testScheduledExecutionTime()
      */
     @Test
-    void testReschedule() throws Exception {
+    void testReschedule() {
         GregorianCalendar calendar = new GregorianCalendar();
         calendar.add(Calendar.MINUTE, 10);
         int minute = calendar.get(Calendar.MINUTE);
@@ -128,7 +130,7 @@ void testReschedule() throws Exception {
         calculation.setCron(minute + " * * * *");
         calculation.reschedule(); // should cancel this calculation and schedule new instance
 
-        assertEquals(calendar.getTimeInMillis(), calculation.scheduledLastInstanceExecutionTime(), 60000, "A new calculation should be scheduled with a new scheduled time.");
+        assertCloseEnough(calendar.getTimeInMillis(), calculation.scheduledLastInstanceExecutionTime(), 60000, "A new calculation should be scheduled with a new scheduled time.");
 
     }
 
@@ -153,4 +155,13 @@ void testTaskIsScheduledOnlyOneTimesPerMinute() throws Exception {
         TestDiskUsageCalculation.stopLoadInstancesHistory();
     }
 
+    static void assertCloseEnough(long expected, long actual, int delta, @Nullable String message) {
+        if (!((expected == actual) || Math.abs(expected - actual) <= delta)) {
+            assertionFailure() //
+                    .message(message) //
+                    .expected(expected) //
+                    .actual(actual) //
+                    .buildAndThrow();
+        }
+    }
 }