diff --git a/README.md b/README.md
index bcf858d15f..873ea7b4fe 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ It provides a common build configuration for all Jenkins plugins.
 
 ## Requirements
 
+Since version 6.2105.v0879858b_48d2, the plugin parent POM requires Jenkins 2.516 or newer and JDK 21 or newer.
 Since version 5.0, the plugin parent POM requires Jenkins 2.479 or newer and JDK 17 or newer.
 Since version 4.52, the plugin parent POM requires Jenkins 2.361 or newer and JDK 11 or newer.
 Since version 4.40, the plugin parent POM supports Java 17.
@@ -35,7 +36,7 @@ Then override the needed properties, e.g.:
     Take a look the developer documentation for the baseline version to use
     https://www.jenkins.io/doc/developer/plugin-development/choosing-jenkins-baseline/#currently-recommended-versions
     -->
-    <jenkins.version>2.361.4</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
   </properties>
 ```
 
diff --git a/pom.xml b/pom.xml
index 05e3bde2b3..4bc44a2607 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,14 +54,14 @@
   </distributionManagement>
 
   <properties>
-    <revision>5</revision>
+    <revision>6</revision>
     <changelist>999999-SNAPSHOT</changelist>
     <gitHubRepo>jenkinsci/plugin-pom</gitHubRepo>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <project.build.outputEncoding>UTF-8</project.build.outputEncoding>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-    <maven.compiler.release>17</maven.compiler.release>
+    <maven.compiler.release>21</maven.compiler.release>
     <maven.compiler.testRelease>${maven.compiler.release}</maven.compiler.testRelease>
     <!-- Generate metadata for reflection on method parameters -->
     <maven.compiler.parameters>true</maven.compiler.parameters>
@@ -83,7 +83,7 @@
     <incrementals-plugin.version>1.13</incrementals-plugin.version>
     <flatten-maven-plugin.version>1.7.3</flatten-maven-plugin.version>
     <jacoco-maven-plugin.version>0.8.14</jacoco-maven-plugin.version>
-    <jenkins.version>2.479</jenkins.version>
+    <jenkins.version>2.516</jenkins.version>
     <jenkins-bom.version>${jenkins.version}</jenkins-bom.version>
     <jenkins-test-harness.version>2543.va_0f3a_a_fd575d</jenkins-test-harness.version>
     <junit.version>6.0.1</junit.version>
@@ -1663,17 +1663,6 @@
         <yarn.lint.skip>true</yarn.lint.skip>
       </properties>
     </profile>
-    <profile>
-      <id>java-level-17</id>
-      <activation>
-        <file>
-          <exists>target/java-level/17</exists>
-        </file>
-      </activation>
-      <properties>
-        <maven.compiler.release>17</maven.compiler.release>
-      </properties>
-    </profile>
     <profile>
       <id>java-level-21</id>
       <activation>
diff --git a/src/it/ban-junit4-fail/pom.xml b/src/it/ban-junit4-fail/pom.xml
index a10136853c..d0f9f85e4c 100644
--- a/src/it/ban-junit4-fail/pom.xml
+++ b/src/it/ban-junit4-fail/pom.xml
@@ -12,7 +12,7 @@
     <version>1.0-SNAPSHOT</version>
     <packaging>hpi</packaging>
     <properties>
-        <jenkins.version>2.479.3</jenkins.version>
+        <jenkins.version>2.516.3</jenkins.version>
         <ban-junit4-imports.skip>false</ban-junit4-imports.skip>
     </properties>
     <repositories>
diff --git a/src/it/ban-junit4-pass/pom.xml b/src/it/ban-junit4-pass/pom.xml
index d25632cee2..76c6acdcd3 100644
--- a/src/it/ban-junit4-pass/pom.xml
+++ b/src/it/ban-junit4-pass/pom.xml
@@ -12,7 +12,7 @@
     <version>1.0-SNAPSHOT</version>
     <packaging>hpi</packaging>
     <properties>
-        <jenkins.version>2.479.3</jenkins.version>
+        <jenkins.version>2.516.3</jenkins.version>
         <ban-junit4-imports.skip>false</ban-junit4-imports.skip>
     </properties>
     <repositories>
diff --git a/src/it/benchmark/pom.xml b/src/it/benchmark/pom.xml
index fe55c5cc95..eb336bd94a 100644
--- a/src/it/benchmark/pom.xml
+++ b/src/it/benchmark/pom.xml
@@ -12,7 +12,7 @@
   <version>1.0-SNAPSHOT</version>
   <packaging>jar</packaging>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
   </properties>
   <repositories>
     <repository>
diff --git a/src/it/beta-fail/pom.xml b/src/it/beta-fail/pom.xml
index cea847baa9..ed0070ca8c 100644
--- a/src/it/beta-fail/pom.xml
+++ b/src/it/beta-fail/pom.xml
@@ -16,7 +16,7 @@
     <module>downstream</module>
   </modules>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <spotless.check.skip>false</spotless.check.skip>
     <maven-hpi-plugin.disabledTestInjection>true</maven-hpi-plugin.disabledTestInjection>
   </properties>
diff --git a/src/it/beta-just-testing/pom.xml b/src/it/beta-just-testing/pom.xml
index 354466be3b..78a24d4250 100644
--- a/src/it/beta-just-testing/pom.xml
+++ b/src/it/beta-just-testing/pom.xml
@@ -16,7 +16,7 @@
     <module>downstream</module>
   </modules>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <spotless.check.skip>false</spotless.check.skip>
     <maven-hpi-plugin.disabledTestInjection>true</maven-hpi-plugin.disabledTestInjection>
   </properties>
diff --git a/src/it/beta-pass/pom.xml b/src/it/beta-pass/pom.xml
index 0268b123cf..518bb33c0f 100644
--- a/src/it/beta-pass/pom.xml
+++ b/src/it/beta-pass/pom.xml
@@ -16,7 +16,7 @@
     <module>downstream</module>
   </modules>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <spotless.check.skip>false</spotless.check.skip>
     <maven-hpi-plugin.disabledTestInjection>true</maven-hpi-plugin.disabledTestInjection>
   </properties>
diff --git a/src/it/cd-plugin/pom.xml b/src/it/cd-plugin/pom.xml
index 1716a6bb85..7ecc28fc3f 100644
--- a/src/it/cd-plugin/pom.xml
+++ b/src/it/cd-plugin/pom.xml
@@ -14,7 +14,7 @@
   <name>CD plugin</name>
   <description>CD description</description>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <changelist>999999-SNAPSHOT</changelist>
     <spotless.check.skip>false</spotless.check.skip>
   </properties>
diff --git a/src/it/incrementals-and-plugin-bom/pom.xml b/src/it/incrementals-and-plugin-bom/pom.xml
index a384a77842..c93d65ab36 100644
--- a/src/it/incrementals-and-plugin-bom/pom.xml
+++ b/src/it/incrementals-and-plugin-bom/pom.xml
@@ -14,15 +14,15 @@
   <properties>
     <revision>1.0</revision>
     <changelist>-SNAPSHOT</changelist>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <spotless.check.skip>false</spotless.check.skip>
   </properties>
   <dependencyManagement>
     <dependencies>
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.479.x</artifactId>
-        <version>3559.vb_5b_81183b_d23</version>
+        <artifactId>bom-2.516.x</artifactId>
+        <version>5857.vb_f3dd0731f44</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/src/it/localizer/pom.xml b/src/it/localizer/pom.xml
index f302b4cc1b..184e8f6d03 100644
--- a/src/it/localizer/pom.xml
+++ b/src/it/localizer/pom.xml
@@ -12,7 +12,7 @@
   <version>1.0-SNAPSHOT</version>
   <packaging>hpi</packaging>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <spotless.check.skip>false</spotless.check.skip>
     <maven-hpi-plugin.disabledTestInjection>true</maven-hpi-plugin.disabledTestInjection>
   </properties>
diff --git a/src/it/override-jth-fail/pom.xml b/src/it/override-jth-fail/pom.xml
index 059749b834..e65adb22d9 100644
--- a/src/it/override-jth-fail/pom.xml
+++ b/src/it/override-jth-fail/pom.xml
@@ -12,7 +12,7 @@
   <version>1.0-SNAPSHOT</version>
   <packaging>hpi</packaging>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
   </properties>
   <dependencyManagement>
     <dependencies>
diff --git a/src/it/override-jth-pass/pom.xml b/src/it/override-jth-pass/pom.xml
index 251c81fe78..31710c1812 100644
--- a/src/it/override-jth-pass/pom.xml
+++ b/src/it/override-jth-pass/pom.xml
@@ -12,7 +12,7 @@
   <version>1.0-SNAPSHOT</version>
   <packaging>hpi</packaging>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <!-- Must differ from the current jth version defined via property -->
     <jenkins-test-harness.version>2384.va_d3a_58a_4b_df5</jenkins-test-harness.version>
   </properties>
diff --git a/src/it/sample-plugin/pom.xml b/src/it/sample-plugin/pom.xml
index 2dbab61e4f..02d251cb83 100644
--- a/src/it/sample-plugin/pom.xml
+++ b/src/it/sample-plugin/pom.xml
@@ -12,7 +12,7 @@
   <version>1.0-SNAPSHOT</version>
   <packaging>hpi</packaging>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
     <spotless.check.skip>false</spotless.check.skip>
   </properties>
   <dependencies>
diff --git a/src/it/servlet-api/pom.xml b/src/it/servlet-api/pom.xml
index 0d44d9b101..d8f628fe90 100644
--- a/src/it/servlet-api/pom.xml
+++ b/src/it/servlet-api/pom.xml
@@ -12,7 +12,7 @@
   <version>1.0-SNAPSHOT</version>
   <packaging>hpi</packaging>
   <properties>
-    <jenkins.version>2.479.1</jenkins.version>
+    <jenkins.version>2.516.3</jenkins.version>
   </properties>
   <dependencies>
     <dependency>