diff --git a/org.eclipse.lsp4e.test/META-INF/MANIFEST.MF b/org.eclipse.lsp4e.test/META-INF/MANIFEST.MF
index 959010f52..2dfb6f56b 100644
--- a/org.eclipse.lsp4e.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.lsp4e.test/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: Tests for language server bundle (Incubation)
 Bundle-SymbolicName: org.eclipse.lsp4e.test;singleton:=true
-Bundle-Version: 0.15.14.qualifier
+Bundle-Version: 0.15.15.qualifier
 Fragment-Host: org.eclipse.lsp4e
 Bundle-Vendor: Eclipse.org
 Bundle-RequiredExecutionEnvironment: JavaSE-17
diff --git a/org.eclipse.lsp4e.test/pom.xml b/org.eclipse.lsp4e.test/pom.xml
index 5149165f6..bd8e32275 100644
--- a/org.eclipse.lsp4e.test/pom.xml
+++ b/org.eclipse.lsp4e.test/pom.xml
@@ -8,7 +8,7 @@
 	</parent>
 	<artifactId>org.eclipse.lsp4e.test</artifactId>
 	<packaging>eclipse-test-plugin</packaging>
-	<version>0.15.14-SNAPSHOT</version>
+	<version>0.15.15-SNAPSHOT</version>
 
 	<properties>
 		<os-jvm-flags /> <!-- for the default case -->
diff --git a/org.eclipse.lsp4e.test/src/org/eclipse/lsp4e/test/edit/LSPEclipseUtilsTest.java b/org.eclipse.lsp4e.test/src/org/eclipse/lsp4e/test/edit/LSPEclipseUtilsTest.java
index 488381cf4..ebd1ce809 100644
--- a/org.eclipse.lsp4e.test/src/org/eclipse/lsp4e/test/edit/LSPEclipseUtilsTest.java
+++ b/org.eclipse.lsp4e.test/src/org/eclipse/lsp4e/test/edit/LSPEclipseUtilsTest.java
@@ -13,7 +13,10 @@
  *******************************************************************************/
 package org.eclipse.lsp4e.test.edit;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -30,7 +33,6 @@
 import java.util.Random;
 
 import org.eclipse.core.filesystem.EFS;
-import org.eclipse.core.internal.utils.FileUtil;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IProject;
@@ -374,9 +376,7 @@ private String readContent(IFile targetFile) throws IOException, CoreException {
 		try (ByteArrayOutputStream stream = new ByteArrayOutputStream(
 				(int) targetFile.getLocation().toFile().length());
 				InputStream contentStream = targetFile.getContents();) {
-			FileUtil.transferStreams(contentStream, stream, targetFile.getFullPath().toString(),
-					new NullProgressMonitor());
-			// targetFile.getContents().transferTo(stream);
+			contentStream.transferTo(stream);
 			return new String(stream.toByteArray());
 		}
 	}
diff --git a/org.eclipse.lsp4e/src/org/eclipse/lsp4e/LSPEclipseUtils.java b/org.eclipse.lsp4e/src/org/eclipse/lsp4e/LSPEclipseUtils.java
index 17a96dd65..9a97054d9 100644
--- a/org.eclipse.lsp4e/src/org/eclipse/lsp4e/LSPEclipseUtils.java
+++ b/org.eclipse.lsp4e/src/org/eclipse/lsp4e/LSPEclipseUtils.java
@@ -57,7 +57,6 @@
 import org.eclipse.core.filesystem.IFileInfo;
 import org.eclipse.core.filesystem.IFileStore;
 import org.eclipse.core.filesystem.IFileSystem;
-import org.eclipse.core.internal.utils.FileUtil;
 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IMarker;
@@ -1164,7 +1163,7 @@ private static CompositeChange toCompositeChange(WorkspaceEdit wsEdit, String na
 						if (oldFile != null && oldFile.exists()) {
 							try (var stream = new ByteArrayOutputStream((int) oldFile.getLocation().toFile().length());
 									InputStream inputStream = oldFile.getContents();) {
-								FileUtil.transferStreams(inputStream, stream, newURI.toString(), null);
+								inputStream.transferTo(stream);
 								content = new String(stream.toByteArray());
 								encoding = oldFile.getCharset();
 							} catch (IOException | CoreException e) {