diff --git a/pom.xml b/pom.xml
index 01e081b..28a13bc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
@@ -39,53 +40,53 @@
   <properties>
     <revision>${project.version}</revision>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>11</maven.compiler.source>
-    <maven.compiler.target>11</maven.compiler.target>
+    <maven.compiler.source>21</maven.compiler.source>
+    <maven.compiler.target>21</maven.compiler.target>
     <junit.version>5.9.2</junit.version>
     <mockito.version>5.3.1</mockito.version>
-</properties>
+  </properties>
 
-<dependencies>
+  <dependencies>
     <!-- JUnit Jupiter API for writing tests -->
     <dependency>
-        <groupId>org.junit.jupiter</groupId>
-        <artifactId>junit-jupiter-api</artifactId>
-        <version>${junit.version}</version>
-        <scope>test</scope>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <version>${junit.version}</version>
+      <scope>test</scope>
     </dependency>
 
     <!-- JUnit Jupiter Engine to run tests -->
     <dependency>
-        <groupId>org.junit.jupiter</groupId>
-        <artifactId>junit-jupiter-engine</artifactId>
-        <version>${junit.version}</version>
-        <scope>test</scope>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <version>${junit.version}</version>
+      <scope>test</scope>
     </dependency>
 
     <!-- JUnit Jupiter Params for parameterized tests -->
     <dependency>
-        <groupId>org.junit.jupiter</groupId>
-        <artifactId>junit-jupiter-params</artifactId>
-        <version>${junit.version}</version>
-        <scope>test</scope>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-params</artifactId>
+      <version>${junit.version}</version>
+      <scope>test</scope>
     </dependency>
 
     <!-- Mockito Core for mocking in tests -->
     <dependency>
-        <groupId>org.mockito</groupId>
-        <artifactId>mockito-core</artifactId>
-        <version>${mockito.version}</version>
-        <scope>test</scope>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-core</artifactId>
+      <version>${mockito.version}</version>
+      <scope>test</scope>
     </dependency>
 
     <!-- Mockito JUnit Jupiter Integration -->
     <dependency>
-        <groupId>org.mockito</groupId>
-        <artifactId>mockito-junit-jupiter</artifactId>
-        <version>${mockito.version}</version>
-        <scope>test</scope>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-junit-jupiter</artifactId>
+      <version>${mockito.version}</version>
+      <scope>test</scope>
     </dependency>
-</dependencies>
+  </dependencies>
 
   <build>
     <plugins>
@@ -100,6 +101,14 @@
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.11.0</version>
+        <configuration>
+          <release>21</release>
+          <compilerArgs>
+            <arg>--enable-preview</arg>
+          </compilerArgs>
+          <source>21</source>
+          <target>21</target>
+        </configuration>
       </plugin>
       <!-- <plugin>
         <artifactId>maven-surefire-plugin</artifactId>
@@ -109,14 +118,14 @@
         <artifactId>maven-surefire-plugin</artifactId>
         <version>3.1.2</version>
         <configuration>
-            <includes>
-                <include>**/*Test.java</include>
-            </includes>
-            <!-- Configure parallel test execution if desired -->
-            <parallel>classes</parallel>
-            <threadCount>4</threadCount>
+          <includes>
+            <include>**/*Test.java</include>
+          </includes>
+          <parallel>classes</parallel>
+          <threadCount>4</threadCount>
+          <argLine>--enable-preview</argLine>
         </configuration>
-    </plugin>
+      </plugin>
       <plugin>
         <artifactId>maven-jar-plugin</artifactId>
         <version>3.3.0</version>
@@ -157,9 +166,9 @@
   <!-- For publishing to Maven Central -->
   <distributionManagement>
     <repository>
-        <id>github</id>
-        <name>GitHub elimelt Apache Maven Packages</name>
-        <url>https://maven.pkg.github.com/elimelt/pmqueue</url>
+      <id>github</id>
+      <name>GitHub elimelt Apache Maven Packages</name>
+      <url>https://maven.pkg.github.com/elimelt/pmqueue</url>
     </repository>
   </distributionManagement>