diff --git a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterDefinition.java b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterDefinition.java
index d9eab64..4d49cdb 100644
--- a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterDefinition.java
+++ b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterDefinition.java
@@ -13,6 +13,7 @@
 import hudson.model.labels.LabelExpression;
 import hudson.util.FormValidation;
 import jakarta.servlet.ServletException;
+import java.io.Serial;
 import java.util.List;
 import java.util.Set;
 import java.util.function.Function;
@@ -37,6 +38,7 @@
 public class LabelParameterDefinition extends SimpleParameterDefinition
         implements MultipleNodeDescribingParameterDefinition {
 
+    @Serial
     private static final long serialVersionUID = 1L;
 
     public final String defaultValue;
@@ -90,8 +92,7 @@ public LabelParameterDefinition(String name, String description, String defaultV
 
     @Override
     public SimpleParameterDefinition copyWithDefaultValue(ParameterValue defaultValueObj) {
-        if (defaultValueObj instanceof LabelParameterValue) {
-            LabelParameterValue value = (LabelParameterValue) defaultValueObj;
+        if (defaultValueObj instanceof LabelParameterValue value) {
             return new LabelParameterDefinition(
                     getName(),
                     getDescription(),
diff --git a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterValue.java b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterValue.java
index 9cd3b03..08783e8 100644
--- a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterValue.java
+++ b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/LabelParameterValue.java
@@ -214,8 +214,8 @@ public BuildWrapper createBuildWrapper(AbstractBuild<?, ?> build) {
         if (property != null) {
             final List<ParameterDefinition> parameterDefinitions = property.getParameterDefinitions();
             for (ParameterDefinition paramDef : parameterDefinitions) {
-                if (paramDef instanceof MultipleNodeDescribingParameterDefinition) {
-                    return ((MultipleNodeDescribingParameterDefinition) paramDef).createBuildWrapper();
+                if (paramDef instanceof MultipleNodeDescribingParameterDefinition definition) {
+                    return definition.createBuildWrapper();
                 }
             }
         }
diff --git a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterDefinition.java b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterDefinition.java
index f2b519d..1d9e7d3 100644
--- a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterDefinition.java
+++ b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterDefinition.java
@@ -8,6 +8,7 @@
 import hudson.model.ParameterDefinition;
 import hudson.model.ParameterValue;
 import hudson.model.SimpleParameterDefinition;
+import java.io.Serial;
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
@@ -33,6 +34,7 @@
 public class NodeParameterDefinition extends SimpleParameterDefinition
         implements MultipleNodeDescribingParameterDefinition {
 
+    @Serial
     private static final long serialVersionUID = 1L;
 
     public final List<String> allowedSlaves;
@@ -261,10 +263,9 @@ public ParameterValue createValue(StaplerRequest2 req, JSONObject jo) {
                 : jo.get("value");
 
         List<String> nodes = new ArrayList<>();
-        if (joValue instanceof String) {
-            nodes.add((String) joValue);
-        } else if (joValue instanceof JSONArray) {
-            JSONArray ja = (JSONArray) joValue;
+        if (joValue instanceof String string) {
+            nodes.add(string);
+        } else if (joValue instanceof JSONArray ja) {
             for (Object strObj : ja) {
                 nodes.add((String) strObj);
             }
diff --git a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterValue.java b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterValue.java
index 41c6f23..2bf210a 100644
--- a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterValue.java
+++ b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/NodeParameterValue.java
@@ -1,6 +1,7 @@
 /** */
 package org.jvnet.jenkins.plugins.nodelabelparameter;
 
+import java.io.Serial;
 import java.util.List;
 import java.util.Objects;
 import org.apache.commons.lang.StringUtils;
@@ -12,6 +13,7 @@
  */
 public class NodeParameterValue extends LabelParameterValue {
 
+    @Serial
     private static final long serialVersionUID = 1L;
 
     /**
diff --git a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/wrapper/TriggerNextBuildWrapper.java b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/wrapper/TriggerNextBuildWrapper.java
index 037fd5a..9c8dd7e 100644
--- a/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/wrapper/TriggerNextBuildWrapper.java
+++ b/src/main/java/org/jvnet/jenkins/plugins/nodelabelparameter/wrapper/TriggerNextBuildWrapper.java
@@ -76,8 +76,7 @@ private void triggerAllBuildsConcurrent(AbstractBuild<?, ?> build, BuildListener
         final List<ParameterValue> origParams = origParamsAction.getParameters();
         final List<ParameterValue> newPrams = new ArrayList<>();
         for (ParameterValue parameterValue : origParams) {
-            if (parameterValue instanceof LabelParameterValue) {
-                LabelParameterValue origNodeParam = (LabelParameterValue) parameterValue;
+            if (parameterValue instanceof LabelParameterValue origNodeParam) {
                 parmaName = origNodeParam.getName();
                 List<String> nextNodes = origNodeParam.getNextLabels();
                 newBuildNodes.addAll(nextNodes);
@@ -120,8 +119,7 @@ private void triggerBuilds(AbstractBuild<?, ?> build, BuildListener listener) {
             boolean triggerNewBuild = false;
             NextLabelCause nextLabelCause = null;
             for (ParameterValue parameterValue : origParams) {
-                if (parameterValue instanceof LabelParameterValue) {
-                    LabelParameterValue origNodePram = (LabelParameterValue) parameterValue;
+                if (parameterValue instanceof LabelParameterValue origNodePram) {
                     List<String> nextNodes = new ArrayList<>(origNodePram.getNextLabels());
                     nextNodes.remove(initialBuildNode);
                     if (!nextNodes.isEmpty()
diff --git a/src/test/java/org/jvnet/jenkins/plugins/nodelabelparameter/TriggerJobsTest.java b/src/test/java/org/jvnet/jenkins/plugins/nodelabelparameter/TriggerJobsTest.java
index cec9124..6bac1e3 100644
--- a/src/test/java/org/jvnet/jenkins/plugins/nodelabelparameter/TriggerJobsTest.java
+++ b/src/test/java/org/jvnet/jenkins/plugins/nodelabelparameter/TriggerJobsTest.java
@@ -334,7 +334,7 @@ void runTestViaCurl(
         ParametersDefinitionProperty pdp = new ParametersDefinitionProperty(parameterDefinition);
         project.addProperty(pdp);
         // URL triggered, see the plugin documentation for more information
-        String triggerUrl = String.format("%s%sbuild", j.getURL(), project.getUrl());
+        String triggerUrl = "%s%sbuild".formatted(j.getURL(), project.getUrl());
 
         JenkinsRule.WebClient wc = j.createWebClient();
         URL url = new URL(triggerUrl);