diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3099273431..865266e93d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     - name: Set up JDK
       uses: actions/setup-java@v4
       with:
-        java-version: 21
+        java-version: 25
         distribution: temurin
         cache: maven
 
diff --git a/mir-it/src/test/java/org/mycore/mir/it/controller/MIRModsEditorController.java b/mir-it/src/test/java/org/mycore/mir/it/controller/MIRModsEditorController.java
index 87d390f84a..ee8b210e30 100644
--- a/mir-it/src/test/java/org/mycore/mir/it/controller/MIRModsEditorController.java
+++ b/mir-it/src/test/java/org/mycore/mir/it/controller/MIRModsEditorController.java
@@ -96,7 +96,7 @@ public void setOpenAIRE(String searchTrigger, String fullName) {
         nameElement.click();
 
         driver.waitAndFindElements(By.xpath(".//ul[contains(@class,'typeahead')]/li/a")).stream()
-            .filter(e -> e.getText().contains(fullName)).limit(1).forEach(e -> e.click());
+            .filter(e -> e.getText().contains(fullName)).limit(1).forEach(WebElement::click);
     }
 
     public void setTitle(String title) {
diff --git a/mir-module/src/main/java/org/mycore/mir/MIRClassificationServlet.java b/mir-module/src/main/java/org/mycore/mir/MIRClassificationServlet.java
index 0f81a8bb4f..e519baeb5e 100644
--- a/mir-module/src/main/java/org/mycore/mir/MIRClassificationServlet.java
+++ b/mir-module/src/main/java/org/mycore/mir/MIRClassificationServlet.java
@@ -52,7 +52,7 @@ private void chooseClassiRoot(HttpServletRequest request) {
     private Collection<Element> getRoleElements() {
         MCRCategoryDAO categoryDao = MCRCategoryDAOFactory.obtainInstance();
         List<MCRCategory> allClassi = categoryDao.getRootCategories();
-        ArrayList<Element> list = new ArrayList<Element>(allClassi.size());
+        ArrayList<Element> list = new ArrayList<>(allClassi.size());
         for (MCRCategory category : allClassi) {
             if (MCRAccessManager.checkPermission(category.getId().toString(), MCRAccessManager.PERMISSION_READ)) {
                 Element role = new Element("classification");
diff --git a/mir-module/src/main/java/org/mycore/mir/authorization/MIROwnerStrategy.java b/mir-module/src/main/java/org/mycore/mir/authorization/MIROwnerStrategy.java
index 8d0f7386f3..f0eb3cac43 100644
--- a/mir-module/src/main/java/org/mycore/mir/authorization/MIROwnerStrategy.java
+++ b/mir-module/src/main/java/org/mycore/mir/authorization/MIROwnerStrategy.java
@@ -69,7 +69,7 @@ public class MIROwnerStrategy implements MCRAccessCheckStrategy {
     private static final Pattern TYPE_PATTERN = Pattern.compile("[^_]*_([^_]*)_*");
 
     private static LoadingCache<MCRObjectID, String> CREATOR_CACHE = CacheBuilder.newBuilder().weakKeys()
-        .maximumSize(5000).build(new CacheLoader<MCRObjectID, String>() {
+        .maximumSize(5000).build(new CacheLoader<>() {
 
             @Override
             public String load(MCRObjectID mcrObjectID) throws Exception {
diff --git a/mir-module/src/main/java/org/mycore/mir/authorization/MIRStrategy.java b/mir-module/src/main/java/org/mycore/mir/authorization/MIRStrategy.java
index 589669c91c..4d0bc9da6f 100644
--- a/mir-module/src/main/java/org/mycore/mir/authorization/MIRStrategy.java
+++ b/mir-module/src/main/java/org/mycore/mir/authorization/MIRStrategy.java
@@ -3,6 +3,7 @@
  */
 package org.mycore.mir.authorization;
 
+import java.util.Comparator;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
@@ -295,9 +296,7 @@ private static List<MCRCategoryID> generateMCRCategoryIDList(String objectType,
             .map(s -> s.substring((objectType + ":").length()))
             .map(MCRCategoryID::ofString)
             .filter(c -> accessClasses.contains(c.getRootID()))
-            .sorted((c1, c2) -> {
-                return accessClasses.indexOf(c1.getRootID()) - accessClasses.indexOf(c2.getRootID());
-            })
+            .sorted(Comparator.comparingInt(c -> accessClasses.indexOf(c.getRootID())))
             .collect(Collectors.toList());
     }
 
diff --git a/mir-module/src/main/java/org/mycore/mir/authorization/ReCaptcha.java b/mir-module/src/main/java/org/mycore/mir/authorization/ReCaptcha.java
index 17640bf9e0..8add000893 100644
--- a/mir-module/src/main/java/org/mycore/mir/authorization/ReCaptcha.java
+++ b/mir-module/src/main/java/org/mycore/mir/authorization/ReCaptcha.java
@@ -106,7 +106,7 @@ private Boolean verifyResponse(final String response, final String ip) {
             final Gson gson = new Gson();
             final ReCaptchaResult rcResult = gson.fromJson(json, ReCaptchaResult.class);
 
-            return Boolean.valueOf(rcResult.success);
+            return rcResult.success;
         } catch (final IOException | InterruptedException e) {
             LOGGER.warn("ReCaptcha response could not be verified!", e);
             return Boolean.FALSE;
diff --git a/mir-module/src/main/java/org/mycore/mir/imageware/MIRImageWarePacker.java b/mir-module/src/main/java/org/mycore/mir/imageware/MIRImageWarePacker.java
index d44ff38aba..e6de5d0ae4 100644
--- a/mir-module/src/main/java/org/mycore/mir/imageware/MIRImageWarePacker.java
+++ b/mir-module/src/main/java/org/mycore/mir/imageware/MIRImageWarePacker.java
@@ -13,6 +13,7 @@
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.concurrent.ExecutionException;
 import java.util.function.Consumer;
@@ -125,7 +126,7 @@ private static Optional<String> detectPPN(MCRObject mcrObject, String defaultPPN
                     return null;
                 }
             })
-            .filter(o -> o != null)
+            .filter(Objects::nonNull)
             .collect(Collectors.toList());
 
         for (URI possiblePPNURI : possiblePPNURIs) {
diff --git a/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202006Utils.java b/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202006Utils.java
index d2e5f76147..26084eac01 100644
--- a/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202006Utils.java
+++ b/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202006Utils.java
@@ -77,7 +77,7 @@ public static List<String> migrateDerivateDisplay(String targetCategory) {
             .filter(
                 der -> "false".equals(der.getRootElement().getChild("derivate").getAttributeValue("display", "true")))
             .map(MCRDerivate::new)
-            .peek(der -> addContentIfNeeded(der))
+            .peek(MIRMigration202006Utils::addContentIfNeeded)
             .map(der -> getMigrationCommand(der, categoryID))
             .collect(Collectors.toList());
     }
@@ -298,9 +298,7 @@ public static void tryMigrationOfTitleInfoOrAbstractRequired(String mycoreObject
                         .map(en -> Optional.ofNullable(titleInfo.getChild(en, MCRConstants.MODS_NAMESPACE))
                             .orElse(titleInfo.getChild(en)))
                         .filter(Objects::nonNull)
-                        .forEach(child -> {
-                            fixHTML(xout, child);
-                        });
+                        .forEach(child -> fixHTML(xout, child));
                     embedDocumentAsAltFormat(domOutputter, element, decodedDocument);
                 } catch (JDOMException | IOException | TransformerException e) {
                     throw new MCRException("Error while building document!", e);
diff --git a/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202206Utils.java b/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202206Utils.java
index eaab61cb75..41aa84f4f9 100644
--- a/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202206Utils.java
+++ b/mir-module/src/main/java/org/mycore/mir/migration/MIRMigration202206Utils.java
@@ -61,9 +61,8 @@ public static void checkNameIdentifierType(String objectID, String dryStr)
         HashSet<String> labelLanguages = getAllRegularLabelLanguagesPresentInCategory(rootCategory, new HashSet<>());
 
         AtomicBoolean update = new AtomicBoolean(false);
-        mcrModsWrapper.getElements("mods:name").forEach(name -> {
-            fixModsName(NAME_IDENTIFIER, rootID, labelLanguages, update, name);
-        });
+        mcrModsWrapper.getElements("mods:name")
+            .forEach(name -> fixModsName(NAME_IDENTIFIER, rootID, labelLanguages, update, name));
 
         if (update.get() && !dry) {
             LOGGER.info("Save updated object: " + mcrObjectID);
@@ -73,9 +72,9 @@ public static void checkNameIdentifierType(String objectID, String dryStr)
 
     private static void fixModsName(String classification, MCRCategoryID rootID, HashSet<String> labelLanguages,
         AtomicBoolean update, Element name) {
-        name.getChildren(NAME_IDENTIFIER, MCRConstants.MODS_NAMESPACE).forEach(nameIdentifier -> {
-            fixModsNameIdentifier(classification, rootID, labelLanguages, update, nameIdentifier);
-        });
+        name.getChildren(NAME_IDENTIFIER, MCRConstants.MODS_NAMESPACE)
+            .forEach(nameIdentifier -> fixModsNameIdentifier(classification, rootID, labelLanguages, update,
+                nameIdentifier));
     }
 
     private static void fixModsNameIdentifier(String classification, MCRCategoryID rootID,
diff --git a/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordIngesterBase.java b/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordIngesterBase.java
index 78abd5433e..79f28886f6 100644
--- a/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordIngesterBase.java
+++ b/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordIngesterBase.java
@@ -125,14 +125,11 @@ public void ingestResource(MCRObject mcrObject, Deposit deposit) throws SwordErr
     public Document buildDCDocument(Map<String, List<String>> dublinCoreMetadata) {
         final Element dcRootElement = new Element("dc");
         final Document dc = new Document(dcRootElement);
-        dublinCoreMetadata.entrySet().forEach(dcElementValueEntry -> {
-            final String elemenName = dcElementValueEntry.getKey();
-            dcElementValueEntry.getValue().forEach(value -> {
-                final Element dcElement = new Element(elemenName, DC_NAMESPACE);
-                dcElement.setText(value);
-                dcRootElement.addContent(dcElement);
-            });
-        });
+        dublinCoreMetadata.forEach((elemenName, value1) -> value1.forEach(value -> {
+            final Element dcElement = new Element(elemenName, DC_NAMESPACE);
+            dcElement.setText(value);
+            dcRootElement.addContent(dcElement);
+        }));
         return dc;
     }
 }
diff --git a/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordMetadataProvider.java b/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordMetadataProvider.java
index 890921889a..b1f84f295d 100644
--- a/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordMetadataProvider.java
+++ b/mir-module/src/main/java/org/mycore/mir/sword2/MIRSwordMetadataProvider.java
@@ -74,9 +74,7 @@ public void addMetadata(MCRObject object, DepositReceipt receipt) throws SwordEr
 
         elementList.stream()
             .filter(dcElement -> dcElement.getText().trim().length() > 0)
-            .forEach(dcElement -> {
-                receipt.addDublinCore(dcElement.getName(), dcElement.getText().trim());
-            });
+            .forEach(dcElement -> receipt.addDublinCore(dcElement.getName(), dcElement.getText().trim()));
 
         MCRSwordUtil.addDatesToEntry(receipt.getWrappedEntry(), object);
     }
diff --git a/mir-module/src/test/java/org/mycore/mir/migration/MIRFundingMigrationTest.java b/mir-module/src/test/java/org/mycore/mir/migration/MIRFundingMigrationTest.java
index 7bd9368c80..560f4308a5 100644
--- a/mir-module/src/test/java/org/mycore/mir/migration/MIRFundingMigrationTest.java
+++ b/mir-module/src/test/java/org/mycore/mir/migration/MIRFundingMigrationTest.java
@@ -48,7 +48,7 @@ public void testMigrationTransformer_success() throws IOException, JDOMException
         assertNull(identifierElement);
         final List<Element> fundingReferenceElements = wrapper.getElements(FUNDING_REFERENCE_XPATH);
         assertEquals(1, fundingReferenceElements.size());
-        final Element fundingReferenceElement = fundingReferenceElements.get(0);
+        final Element fundingReferenceElement = fundingReferenceElements.getFirst();
         final Element awardTitleElement = fundingReferenceElement.getChild("awardTitle");
         assertNotNull(awardTitleElement);
         assertEquals(AWARD_TITLE, awardTitleElement.getText());
diff --git a/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandChain.java b/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandChain.java
index 2d8cffcb1f..a07373fb93 100644
--- a/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandChain.java
+++ b/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandChain.java
@@ -40,7 +40,7 @@ public class MIRWizardCommandChain {
     private boolean success = true;
 
     public MIRWizardCommandChain() {
-        setCommands(new ArrayList<MIRWizardCommand>());
+        setCommands(new ArrayList<>());
     }
 
     public List<MIRWizardCommand> getCommands() {
diff --git a/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandResult.java b/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandResult.java
index 636a90955f..870d5bb09f 100644
--- a/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandResult.java
+++ b/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardCommandResult.java
@@ -50,7 +50,7 @@ public class MIRWizardCommandResult {
 
     private boolean success;
 
-    private Map<String, String> attributes = new HashMap<String, String>();
+    private Map<String, String> attributes = new HashMap<>();
 
     private Element result;
 
diff --git a/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardStartupHandler.java b/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardStartupHandler.java
index 90d106f3b0..31abec1210 100644
--- a/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardStartupHandler.java
+++ b/mir-wizard/src/main/java/org/mycore/mir/wizard/MIRWizardStartupHandler.java
@@ -70,7 +70,7 @@ public class MIRWizardStartupHandler implements MCRStartupHandler.AutoExecutable
     private static final String WIZARD_FILTER_CLASS = MIRWizardRequestFilter.class.getName();
 
     static void outputLoginToken(ServletContext servletContext) {
-        final StringBuffer sb = new StringBuffer();
+        final StringBuilder sb = new StringBuilder();
 
         final String line = "=".repeat(80);
         sb.append("\n\n")
diff --git a/mir-wizard/src/main/java/org/mycore/mir/wizard/command/MIRWizardInitDatabase.java b/mir-wizard/src/main/java/org/mycore/mir/wizard/command/MIRWizardInitDatabase.java
index 48e889f43c..17da78db83 100644
--- a/mir-wizard/src/main/java/org/mycore/mir/wizard/command/MIRWizardInitDatabase.java
+++ b/mir-wizard/src/main/java/org/mycore/mir/wizard/command/MIRWizardInitDatabase.java
@@ -61,9 +61,9 @@ private MIRWizardInitDatabase(String name) {
     @Override
     public void doExecute() {
         try {
-            StringBuffer res = new StringBuffer();
+            StringBuilder res = new StringBuilder();
 
-            HashMap<String, String> initProps = new HashMap<String, String>();
+            HashMap<String, String> initProps = new HashMap<>();
             initProps.put("hibernate.hbm2ddl.auto", "create");
             MCRJPABootstrapper.initializeJPA(PERSISTENCE_UNIT_NAME, initProps);
 
diff --git a/pom.xml b/pom.xml
index 425018b257..c7c4e273d0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -40,12 +40,12 @@
     <changelog.since>2024-12-18</changelog.since>
     <!-- until snapshot matches released version (required for 'mvn changes:changes-check') -->
     <changes.version>2025.02</changes.version>
-    <java.target.version>21</java.target.version>
+    <java.target.version>25</java.target.version>
     <jetty.version>12.1.6</jetty.version>
     <maven.compiler.arg>-Werror</maven.compiler.arg>
     <mycore.version>2026.06.0-SNAPSHOT</mycore.version>
     <pmd.failOnViolation>true</pmd.failOnViolation>
-    <pmd.version>7.11.0</pmd.version>
+    <pmd.version>7.16.0</pmd.version>
     <selenium.version>4.23.0</selenium.version>
     <site.suffix />
     <solr-runner.solrVersionString>9.10.1</solr-runner.solrVersionString>