diff --git a/en-presentation/pom.xml b/en-presentation/pom.xml
index 3c73c87..2854df7 100644
--- a/en-presentation/pom.xml
+++ b/en-presentation/pom.xml
@@ -1,5 +1,4 @@
 <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>
 	<artifactId>en-presentation</artifactId>
 
@@ -14,7 +13,7 @@
 	<description>Library for the programmatic construction of presentations. Based on Apache POI, this library does not require that you understand office document formats, and provides a simplified abstraction.</description>
 
 	<properties>
-		<poi.version>4.1.1</poi.version>
+		<poi.version>5.4.0</poi.version>
 	</properties>
 
 	<dependencies>
diff --git a/en-presentation/src/test/java/com/g2forge/enigma/presentation/TestPresentationBuilder.java b/en-presentation/src/test/java/com/g2forge/enigma/presentation/TestPresentationBuilder.java
index c03f736..51ffd26 100644
--- a/en-presentation/src/test/java/com/g2forge/enigma/presentation/TestPresentationBuilder.java
+++ b/en-presentation/src/test/java/com/g2forge/enigma/presentation/TestPresentationBuilder.java
@@ -1,7 +1,9 @@
 package com.g2forge.enigma.presentation;
 
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.Paths;
 
 import org.junit.Assert;
 import org.junit.Test;
@@ -24,6 +26,8 @@
 import com.g2forge.enigma.presentation.slide.SlideTitle;
 
 public class TestPresentationBuilder {
+	protected static final Path REGENERATION_DIRECTORY = null;
+
 	protected void assertPresentationEquals(final String expected, final IConsumer1<PresentationBuilder> test) throws IOException {
 		try (final TempDirectory temp = new TempDirectory()) {
 			try (final PresentationBuilder actual = new PresentationBuilder()) {
@@ -32,6 +36,7 @@ protected void assertPresentationEquals(final String expected, final IConsumer1<
 
 				test.accept(actual);
 				actual.write(actualActual);
+				if (REGENERATION_DIRECTORY != null) Files.copy(actualActual, REGENERATION_DIRECTORY.resolve(expected));
 				Assert.assertTrue(HZip.isEqual(name -> {
 					final IMediaType mediaType = HMedia.getMediaType(name);
 					return ((mediaType != null) && mediaType.isText()) ? HTextIO::isEqual : HBinaryIO::isEqual;
diff --git a/en-presentation/src/test/java/com/g2forge/enigma/presentation/code.pptx b/en-presentation/src/test/java/com/g2forge/enigma/presentation/code.pptx
index 03026fb..9a3ecec 100644
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diff --git a/en-presentation/src/test/java/com/g2forge/enigma/presentation/doc.pptx b/en-presentation/src/test/java/com/g2forge/enigma/presentation/doc.pptx
index b86baa5..4b158b3 100644
Binary files a/en-presentation/src/test/java/com/g2forge/enigma/presentation/doc.pptx and b/en-presentation/src/test/java/com/g2forge/enigma/presentation/doc.pptx differ
diff --git a/en-presentation/src/test/java/com/g2forge/enigma/presentation/empty.pptx b/en-presentation/src/test/java/com/g2forge/enigma/presentation/empty.pptx
index 6084f44..88f9e00 100644
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diff --git a/en-presentation/src/test/java/com/g2forge/enigma/presentation/link.pptx b/en-presentation/src/test/java/com/g2forge/enigma/presentation/link.pptx
index 2d65a22..50f417a 100644
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diff --git a/en-presentation/src/test/java/com/g2forge/enigma/presentation/title.pptx b/en-presentation/src/test/java/com/g2forge/enigma/presentation/title.pptx
index 9ed12c8..45035af 100644
Binary files a/en-presentation/src/test/java/com/g2forge/enigma/presentation/title.pptx and b/en-presentation/src/test/java/com/g2forge/enigma/presentation/title.pptx differ