diff --git a/library/pom.xml b/library/pom.xml
index 2ab63d9f..52376253 100644
--- a/library/pom.xml
+++ b/library/pom.xml
@@ -79,12 +79,12 @@
 		<dependency>
 			<groupId>org.apache.pdfbox</groupId>
 			<artifactId>preflight</artifactId>
-			<version>2.0.27</version>
+			<version>3.0.2</version>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.pdfbox</groupId>
 			<artifactId>pdfbox</artifactId>
-			<version>2.0.27</version>
+			<version>3.0.2</version>
 		</dependency>
 		<dependency>
 			<groupId>org.dom4j</groupId>
diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java b/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java
index 1e22166c..b6ebdfe4 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/DXExporterFromA3.java
@@ -22,6 +22,7 @@
 
 import org.apache.pdfbox.cos.*;
 import org.apache.pdfbox.io.IOUtils;
+import org.apache.pdfbox.io.RandomAccessReadBuffer;
 import org.apache.pdfbox.pdmodel.*;
 import org.apache.pdfbox.pdmodel.common.PDMetadata;
 import org.apache.pdfbox.pdmodel.common.filespecification.PDComplexFileSpecification;
@@ -29,7 +30,6 @@
 import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDMarkInfo;
 import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDStructureTreeRoot;
 import org.apache.pdfbox.pdmodel.graphics.color.PDOutputIntent;
-import org.apache.pdfbox.preflight.utils.ByteArrayDataSource;
 import org.apache.xmpbox.XMPMetadata;
 import org.apache.xmpbox.schema.AdobePDFSchema;
 import org.apache.xmpbox.schema.DublinCoreSchema;
@@ -162,7 +162,7 @@ public DXExporterFromA3 addAdditionalFile(String name, byte[] content) {
 	 * @param pdfBinary binary of a PDF/A1 compliant document
 	 */
 	public DXExporterFromA3 load(byte[] pdfBinary) throws IOException {
-		ensurePDFIsValid(new ByteArrayDataSource(new ByteArrayInputStream(pdfBinary)));
+		ensurePDFIsValid((DataSource) new RandomAccessReadBuffer(pdfBinary));
 		doc = PDDocument.load(pdfBinary);
 		return this;
 	}
@@ -542,6 +542,7 @@ protected void writePDFAIdentificationSchema(XMPMetadata xmp) {
 	}
 
 	protected PDFAIdentificationSchema getPDFAIdentificationSchema(XMPMetadata xmp) {
+
 		PDFAIdentificationSchema pdfaid = xmp.getPDFIdentificationSchema();
 		if (pdfaid != null)
 			if (overwrite)