diff --git a/itext/src/main/java/com/itextpdf/text/pdf/PdfStamper.java b/itext/src/main/java/com/itextpdf/text/pdf/PdfStamper.java
index c3185524f..38f053164 100644
--- a/itext/src/main/java/com/itextpdf/text/pdf/PdfStamper.java
+++ b/itext/src/main/java/com/itextpdf/text/pdf/PdfStamper.java
@@ -59,6 +59,7 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.nio.file.Files;
 import java.security.cert.Certificate;
 import java.util.HashMap;
 import java.util.List;
@@ -700,7 +701,7 @@ public static PdfStamper createSignature(final PdfReader reader, final OutputStr
         }
         else {
             if (tempFile.isDirectory())
-                tempFile = File.createTempFile("pdf", ".pdf", tempFile);
+                tempFile = Files.createTempFile(tempFile.toPath(), "pdf", ".pdf").toFile();
             FileOutputStream fout = new FileOutputStream(tempFile);
             stp = new PdfStamper(reader, fout, pdfVersion, append);
             stp.sigApp = new PdfSignatureAppearance(stp.stamper);
diff --git a/itext/src/test/java/com/itextpdf/testutils/TestResourceUtils.java b/itext/src/test/java/com/itextpdf/testutils/TestResourceUtils.java
index 05a4bf546..92798a27b 100644
--- a/itext/src/test/java/com/itextpdf/testutils/TestResourceUtils.java
+++ b/itext/src/test/java/com/itextpdf/testutils/TestResourceUtils.java
@@ -54,6 +54,7 @@
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.PrintStream;
+import java.nio.file.Files;
 
 import com.itextpdf.text.pdf.PdfReader;
 
@@ -120,7 +121,7 @@ public static File getBytesAsTempFile(byte[] bytes) throws IOException {
     private static File writeStreamToTempFile(String id, InputStream is) throws IOException{
         if (is == null) throw new NullPointerException("Input stream is null");
         
-        File f = File.createTempFile(TESTPREFIX + id + "-", ".pdf");
+        File f = Files.createTempFile(TESTPREFIX + id + "-", ".pdf").toFile();
         f.deleteOnExit();
 
         final OutputStream os = new BufferedOutputStream(new FileOutputStream(f));
diff --git a/pdfa/src/main/java/com/itextpdf/text/pdf/PdfAStamper.java b/pdfa/src/main/java/com/itextpdf/text/pdf/PdfAStamper.java
index 07d0d9945..c6179b9be 100644
--- a/pdfa/src/main/java/com/itextpdf/text/pdf/PdfAStamper.java
+++ b/pdfa/src/main/java/com/itextpdf/text/pdf/PdfAStamper.java
@@ -49,6 +49,7 @@
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.nio.file.Files;
 
 /**
  * Extension of PdfStamper that will attempt to keep a file
@@ -146,7 +147,7 @@ public static PdfAStamper createSignature(final PdfReader reader, final OutputSt
         }
         else {
             if (tempFile.isDirectory())
-                tempFile = File.createTempFile("pdf", null, tempFile);
+                tempFile = Files.createTempFile(tempFile.toPath(), "pdf", null).toFile();
             FileOutputStream fout = new FileOutputStream(tempFile);
             stp = new PdfAStamper(reader, fout, pdfVersion, append, conformanceLevel);
             stp.sigApp = new PdfSignatureAppearance(stp.stamper);