diff --git a/README.md b/README.md
new file mode 100644
index 0000000..960df97
--- /dev/null
+++ b/README.md
@@ -0,0 +1,8 @@
+# Adyen Risk Engine
+
+This Java Maven challenge is upgraded for Java 25.
+
+## Validation
+
+- Build and tests run with Maven on Java 25.
+- Candidate-facing source, tests, and scoring entry points remain in the existing project layout.
diff --git a/pom.xml b/pom.xml
index b4c2e8f..3472070 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,5 @@
-<?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"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<?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" 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>
 
     <groupId>com.hackerrank</groupId>
@@ -14,17 +12,17 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
+        <maven.compiler.source>25</maven.compiler.source>
+        <maven.compiler.target>25</maven.compiler.target>
         <junit.version>5.9.3</junit.version>
-    </properties>
+    <java.version>25</java.version><maven.compiler.release>25</maven.compiler.release></properties>
 
     <dependencies>
         <!-- JUnit 5 for testing -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>
-            <version>${junit.version}</version>
+            <version>6.0.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -35,31 +33,31 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.11.0</version>
+                <version>3.15.0</version>
                 <configuration>
                     <source>21</source>
                     <target>21</target>
-                </configuration>
+                <release>25</release></configuration>
             </plugin>
 
             <!-- Maven Surefire Plugin for running tests and generating XML reports -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.0.0</version>
+                <version>3.5.6</version>
                 <configuration>
                     <includes>
                         <include>**/*Test.java</include>
                     </includes>
                     <reportFormat>xml</reportFormat>
-                </configuration>
+                <reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory><useModulePath>false</useModulePath></configuration>
             </plugin>
 
             <!-- Maven JAR Plugin to create executable JAR -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.4.2</version>
                 <configuration>
                     <archive>
                         <manifest>