diff --git a/tools/pom.xml b/tools/pom.xml
index 519b8a9f..5eb0313f 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -55,7 +55,7 @@
         <lib.commons.lang3.version>3.6</lib.commons.lang3.version>
         <lib.commons.text.version>1.12.0</lib.commons.text.version>
         <lib.unirest.version>1.4.9</lib.unirest.version>
-        <lib.cyclonedx.core.java.version>8.0.3</lib.cyclonedx.core.java.version>
+        <lib.cyclonedx.core.java.version>9.0.2</lib.cyclonedx.core.java.version>
     </properties>
 
     <scm>
diff --git a/tools/src/test/java/org/cyclonedx/schema/JsonSchemaVerificationTest.java b/tools/src/test/java/org/cyclonedx/schema/JsonSchemaVerificationTest.java
index 3862bb14..c11b25ec 100644
--- a/tools/src/test/java/org/cyclonedx/schema/JsonSchemaVerificationTest.java
+++ b/tools/src/test/java/org/cyclonedx/schema/JsonSchemaVerificationTest.java
@@ -13,15 +13,16 @@
  */
 package org.cyclonedx.schema;
 
-import org.cyclonedx.CycloneDxSchema;
-import org.cyclonedx.parsers.JsonParser;
-import org.junit.jupiter.api.DynamicTest;
-import org.junit.jupiter.api.TestFactory;
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
+import org.cyclonedx.parsers.JsonParser;
+import org.cyclonedx.Version;
+import org.junit.jupiter.api.DynamicTest;
+import org.junit.jupiter.api.TestFactory;
+
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 
@@ -33,15 +34,15 @@ Collection<DynamicTest> dynamicTestsWithCollection() throws Exception {
         final List<DynamicTest> dynamicTests = new ArrayList<>();
         for (final String file: files) {
             if (file.endsWith(".json")) {
-                final CycloneDxSchema.Version schemaVersion;
+                final Version schemaVersion;
                 if (file.endsWith("-1.2.json")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_12;
+                    schemaVersion = Version.VERSION_12;
                 } else if (file.endsWith("-1.3.json")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_13;
+                    schemaVersion = Version.VERSION_13;
                 } else if (file.endsWith("-1.4.json")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_14;
+                    schemaVersion = Version.VERSION_14;
                 } else if (file.endsWith("-1.5.json")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_15;
+                    schemaVersion = Version.VERSION_15;
                 } else {
                     schemaVersion = null;
                 }
@@ -57,7 +58,7 @@ Collection<DynamicTest> dynamicTestsWithCollection() throws Exception {
         return dynamicTests;
     }
 
-    private boolean isValidJson(CycloneDxSchema.Version version, String resource) throws Exception {
+    private boolean isValidJson(Version version, String resource) throws Exception {
         final File file = new File(this.getClass().getResource(resource).getFile());
         final JsonParser parser = new JsonParser();
         return parser.isValid(file, version);
diff --git a/tools/src/test/java/org/cyclonedx/schema/XmlSchemaVerificationTest.java b/tools/src/test/java/org/cyclonedx/schema/XmlSchemaVerificationTest.java
index 01434b00..a56e77e3 100644
--- a/tools/src/test/java/org/cyclonedx/schema/XmlSchemaVerificationTest.java
+++ b/tools/src/test/java/org/cyclonedx/schema/XmlSchemaVerificationTest.java
@@ -13,39 +13,46 @@
  */
 package org.cyclonedx.schema;
 
-import org.cyclonedx.CycloneDxSchema;
-import org.cyclonedx.parsers.XmlParser;
-import org.junit.jupiter.api.DynamicTest;
-import org.junit.jupiter.api.TestFactory;
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
+import org.cyclonedx.parsers.XmlParser;
+import org.cyclonedx.Version;
+import org.junit.jupiter.api.DynamicTest;
+import org.junit.jupiter.api.TestFactory;
+
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 
 public class XmlSchemaVerificationTest extends BaseSchemaVerificationTest {
 
     @TestFactory
+    /**
+     * Generates a collection of dynamic tests based on the available XML files.
+     *
+     * @return Collection<DynamicTest> a collection of dynamic tests
+     * @throws Exception if an error occurs during the generation of the dynamic tests
+     */
     Collection<DynamicTest> dynamicTestsWithCollection() throws Exception {
         final List<String> files = getAllResources();
         final List<DynamicTest> dynamicTests = new ArrayList<>();
         for (final String file: files) {
             if (file.endsWith(".xml")) {
-                final CycloneDxSchema.Version schemaVersion;
+                final Version schemaVersion;
                 if (file.endsWith("-1.0.xml")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_10;
+                    schemaVersion = Version.VERSION_10;
                 } else if (file.endsWith("-1.1.xml")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_11;
+                    schemaVersion = Version.VERSION_11;
                 } else if (file.endsWith("-1.2.xml")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_12;
+                    schemaVersion = Version.VERSION_12;
                 } else if (file.endsWith("-1.3.xml")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_13;
+                    schemaVersion = Version.VERSION_13;
                 } else if (file.endsWith("-1.4.xml")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_14;
+                    schemaVersion = Version.VERSION_14;
                 } else if (file.endsWith("-1.5.xml")) {
-                    schemaVersion = CycloneDxSchema.Version.VERSION_15;
+                    schemaVersion = Version.VERSION_15;
                 } else {
                     schemaVersion = null;
                 }
@@ -61,7 +68,15 @@ Collection<DynamicTest> dynamicTestsWithCollection() throws Exception {
         return dynamicTests;
     }
 
-    private boolean isValid(CycloneDxSchema.Version version, String resource) throws Exception {
+    /**
+     * Validates the given XML file against the specified CycloneDX schema version.
+     *
+     * @param  version   the CycloneDX schema version to validate against
+     * @param  resource  the path to the XML file to be validated
+     * @return boolean   true if the XML file is valid according to the specified schema version, false otherwise
+     * @throws Exception if an error occurs during the validation process
+     */
+    private boolean isValid(Version version, String resource) throws Exception {
         final File file = new File(this.getClass().getResource(resource).getFile());
         final XmlParser parser = new XmlParser();
         return parser.isValid(file, version);