diff --git a/build.gradle b/build.gradle
index 9a9dfd2..21d40b1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,4 @@
 plugins {
-    id "checkstyle"
     id "pmd"
     id 'maven-publish'
     id 'signing'
@@ -41,13 +40,10 @@ dependencies {
     testImplementation testLibs.marc4j
 }
 
-//apply from: rootProject.file('gradle/ide/idea.gradle')
 apply from: rootProject.file('gradle/compile/java.gradle')
 apply from: rootProject.file('gradle/test/junit5.gradle')
 apply from: rootProject.file('gradle/repositories/maven.gradle')
 apply from: rootProject.file('gradle/quality/cyclonedx.gradle')
-//apply from: rootProject.file('gradle/quality/spotbugs.gradle')
-apply from: rootProject.file('gradle/quality/checkstyle.gradle')
 apply from: rootProject.file('gradle/quality/pmd.gradle')
 apply from: rootProject.file('gradle/publish/maven.gradle')
 apply from: rootProject.file('gradle/publish/sonatype.gradle')
diff --git a/gradle.properties b/gradle.properties
index 1c703ab..da4f174 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 group = org.xbib
 name = marc
-version = 2.14.0
+version = 2.14.1
 
 org.gradle.warning.mode = ALL
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 7f93135..d64cd49 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 8838ba9..e6aba25 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/settings.gradle b/settings.gradle
index 7034967..b52ccae 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -15,7 +15,7 @@ pluginManagement {
 dependencyResolutionManagement {
     versionCatalogs {
         libs {
-            version('gradle', '8.4')
+            version('gradle', '8.5')
         }
         testLibs {
             version('junit', '5.10.0')
@@ -25,11 +25,11 @@ dependencyResolutionManagement {
             library('junit-jupiter-platform-launcher', 'org.junit.platform', 'junit-platform-launcher').version('1.10.0')
             library('hamcrest', 'org.hamcrest', 'hamcrest-library').version('2.2')
             library('charactersets', 'org.xbib', 'bibliographic-character-sets').version('2.0.0')
-            library('json', 'org.xbib', 'content-json').version('5.0.1')
             library('xalan', 'xalan', 'xalan').version('2.7.2')
             library('xmlunit', 'org.xmlunit', 'xmlunit-matchers').version('2.8.4')
             library('mockito', 'org.mockito', 'mockito-core').version('3.3.3')
             library('marc4j', 'org.marc4j', 'marc4j').version('2.9.2')
+            library('json', 'org.xbib', 'datastructures-json-tiny').version('5.0.6')
         }
     }
 }
diff --git a/src/test/java/org/xbib/marc/MarcRecordTest.java b/src/test/java/org/xbib/marc/MarcRecordTest.java
index 79252c7..33c5a7f 100644
--- a/src/test/java/org/xbib/marc/MarcRecordTest.java
+++ b/src/test/java/org/xbib/marc/MarcRecordTest.java
@@ -22,8 +22,8 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
 import java.io.IOException;
 import java.time.LocalDate;
 import org.junit.jupiter.api.Test;
-import org.xbib.content.XContentBuilder;
-import org.xbib.content.json.JsonXContent;
+import org.xbib.datastructures.api.Builder;
+import org.xbib.datastructures.json.tiny.JsonBuilder;
 import org.xbib.marc.label.RecordLabel;
 import org.xbib.marc.transformer.value.MarcValueTransformers;
 import org.xbib.marc.xml.MarcXchangeWriter;
@@ -295,9 +295,9 @@ public class MarcRecordTest {
                 "100", Map.of("_", Map.of("a", "Hello World"))));
         MarcRecord marcRecord = MarcRecord.from(map);
         assertEquals("{001=123, 100={_={a=Hello World}}}", marcRecord.toString());
-        XContentBuilder builder = JsonXContent.contentBuilder();
-        builder.map(marcRecord);
-        assertEquals("{\"001\":\"123\",\"100\":{\"_\":{\"a\":\"Hello World\"}}}", builder.string());
+        Builder builder = JsonBuilder.builder();
+        builder.buildMap(marcRecord);
+        assertEquals("{\"001\":\"123\",\"100\":{\"_\":{\"a\":\"Hello World\"}}}", builder.build());
     }
 
     @Test
diff --git a/src/test/java/org/xbib/marc/filter/MarcFieldFilterByRecordIdentifierTest.java b/src/test/java/org/xbib/marc/filter/MarcFieldFilterByRecordIdentifierTest.java
index 6e30d59..92412d9 100644
--- a/src/test/java/org/xbib/marc/filter/MarcFieldFilterByRecordIdentifierTest.java
+++ b/src/test/java/org/xbib/marc/filter/MarcFieldFilterByRecordIdentifierTest.java
@@ -16,8 +16,8 @@
 package org.xbib.marc.filter;
 
 import org.junit.jupiter.api.Test;
-import org.xbib.content.XContentBuilder;
-import org.xbib.content.json.JsonXContent;
+import org.xbib.datastructures.api.Builder;
+import org.xbib.datastructures.json.tiny.JsonBuilder;
 import org.xbib.marc.Marc;
 import org.xbib.marc.MarcField;
 import org.xbib.marc.MarcFieldAdapter;
@@ -93,15 +93,15 @@ public class MarcFieldFilterByRecordIdentifierTest {
                 .collect(Collectors.toList());
 
         // JSON output
-        XContentBuilder builder = JsonXContent.contentBuilder().prettyPrint()
-                .startObject();
+        Builder builder = JsonBuilder.builder()
+                .beginMap();
         for (Map.Entry<String, Map<String, List<Map<String, String>>>> entry : result.entrySet()) {
             builder.field(entry.getKey(), entry.getValue());
         }
         builder.field("issns", issns);
-        builder.endObject();
+        builder.endMap();
 
-        logger.log(Level.INFO, builder.string());
+        logger.log(Level.INFO, builder.build());
     }
 
     private static boolean matchISSNField(MarcField field, MarcField.Subfield subfield) {
diff --git a/src/test/java/org/xbib/marc/filter/MarcFieldFilterTest.java b/src/test/java/org/xbib/marc/filter/MarcFieldFilterTest.java
index b608b46..a90ef31 100644
--- a/src/test/java/org/xbib/marc/filter/MarcFieldFilterTest.java
+++ b/src/test/java/org/xbib/marc/filter/MarcFieldFilterTest.java
@@ -15,9 +15,9 @@
  */
 package org.xbib.marc.filter;
 
-import static org.xbib.content.json.JsonXContent.contentBuilder;
 import org.junit.jupiter.api.Test;
-import org.xbib.content.XContentBuilder;
+import org.xbib.datastructures.api.Builder;
+import org.xbib.datastructures.json.tiny.JsonBuilder;
 import org.xbib.marc.Marc;
 import org.xbib.marc.MarcField;
 import org.xbib.marc.MarcFieldAdapter;
@@ -77,15 +77,15 @@ public class MarcFieldFilterTest {
                 .collect(Collectors.toList());
 
         // JSON output
-        XContentBuilder builder = contentBuilder().prettyPrint()
-                .startObject();
+        Builder builder = JsonBuilder.builder()
+                .beginMap();
         for (Map.Entry<String, List<Map<String, String>>> entry : result.entrySet()) {
             builder.field(entry.getKey(), entry.getValue());
         }
-        builder.array("issns", issns);
-        builder.endObject();
+        builder.collection("issns", issns);
+        builder.endMap();
 
-        logger.log(Level.INFO, builder.string());
+        logger.log(Level.INFO, builder.build());
     }
 
     private static boolean matchISSNField(MarcField field, MarcField.Subfield subfield) {