diff --git a/Jenkinsfile b/Jenkinsfile
index c4d6faa..a566ce1 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,5 +1,4 @@
 buildPlugin(useContainerAgent: true, configurations: [
-  [platform: "linux", jdk: 17],
-  [platform: "linux", jdk: 21],
-  [platform: "windows", jdk: 11]
+  [platform: 'linux', jdk: 21],
+  [platform: 'windows', jdk: 17]
 ])
diff --git a/pom.xml b/pom.xml
index c643dfb..0f64221 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>4.88</version>
+    <version>5.1</version>
     <relativePath />
   </parent>
   
@@ -23,7 +23,7 @@
   </licenses>
   <properties>
     <changelist>999999-SNAPSHOT</changelist>
-    <jenkins.version>2.440.3</jenkins.version>
+    <jenkins.version>2.479</jenkins.version>
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
     <useBeta>true</useBeta>
   </properties>
@@ -32,8 +32,8 @@
     <dependencies>
       <dependency>
         <groupId>io.jenkins.tools.bom</groupId>
-        <artifactId>bom-2.440.x</artifactId>
-        <version>3358.vea_fa_1f41504d</version>
+        <artifactId>bom-2.462.x</artifactId>
+        <version>3435.v238d66a_043fb_</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>
diff --git a/src/main/java/hudson/tasks/Mailer.java b/src/main/java/hudson/tasks/Mailer.java
index cc7d6e2..c856a04 100644
--- a/src/main/java/hudson/tasks/Mailer.java
+++ b/src/main/java/hudson/tasks/Mailer.java
@@ -77,7 +77,7 @@
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.stapler.DataBoundSetter;
 import org.kohsuke.stapler.QueryParameter;
-import org.kohsuke.stapler.StaplerRequest;
+import org.kohsuke.stapler.StaplerRequest2;
 import org.kohsuke.stapler.export.Exported;
 
 import jenkins.model.Jenkins;
@@ -439,7 +439,7 @@ protected PasswordAuthentication getPasswordAuthentication() {
         }
 
         @Override
-        public boolean configure(StaplerRequest req, JSONObject json) throws FormException {
+        public boolean configure(StaplerRequest2 req, JSONObject json) throws FormException {
 
             // Nested Describable (SMTPAuthentication) is not set to null in case it is not configured.
             // To mitigate that, it is being set to null before (so it gets set to sent value or null correctly) and, in
@@ -637,7 +637,7 @@ public void setSmtpAuth(String userName, String password) {
         }
 
         @Override
-        public Publisher newInstance(StaplerRequest req, JSONObject formData) throws FormException {
+        public Publisher newInstance(StaplerRequest2 req, JSONObject formData) throws FormException {
             Mailer m = (Mailer)super.newInstance(req, formData);
 
             if(hudsonUrl==null) {
@@ -823,7 +823,7 @@ public UserProperty newInstance(User user) {
             }
 
             @Override
-            public UserProperty newInstance(@CheckForNull StaplerRequest req, JSONObject formData) throws FormException {
+            public UserProperty newInstance(@CheckForNull StaplerRequest2 req, JSONObject formData) throws FormException {
                 return new UserProperty(req != null ? req.getParameter("email.address") : null);
             }
         }