diff --git a/src/test/java/org/biouno/unochoice/TestPersistingParameters.java b/src/test/java/org/biouno/unochoice/TestPersistingParameters.java
index aa0edd43..5b23229a 100644
--- a/src/test/java/org/biouno/unochoice/TestPersistingParameters.java
+++ b/src/test/java/org/biouno/unochoice/TestPersistingParameters.java
@@ -108,7 +108,7 @@ public void setUp() throws Exception {
         // scriptler setup
         scriptler = j.getInstance().getExtensionList(ScriptlerManagement.class).get(0);
         ScriptlerHelper scriptlerHelper = new ScriptlerHelper(scriptler);
-        scriptFile = File.createTempFile("uno-choice", "dummy.groovy");
+        scriptFile = Files.createTempFile("uno-choice", "dummy.groovy").toFile();
         FileUtils.writeStringToFile(scriptFile, SCRIPT_PARAM001, Charset.defaultCharset(), false);
         FileItem fi = new FileItemImpl(scriptFile);
         scriptlerHelper.saveScript(fi, true, "dummy.groovy");
diff --git a/src/test/java/org/biouno/unochoice/issue63983/TestSandboxAndApproval.java b/src/test/java/org/biouno/unochoice/issue63983/TestSandboxAndApproval.java
index 2b4bcdb5..ab8c3716 100644
--- a/src/test/java/org/biouno/unochoice/issue63983/TestSandboxAndApproval.java
+++ b/src/test/java/org/biouno/unochoice/issue63983/TestSandboxAndApproval.java
@@ -44,6 +44,7 @@
 
 import java.io.File;
 import java.nio.charset.Charset;
+import java.nio.file.Files;
 import java.util.Collections;
 
 @Issue("63983")
@@ -61,7 +62,7 @@ public void testGroovyScriptApprovedNoSandboxOK() throws Exception {
         final String scriptText = "import hudson.model.Hudson;\n" +
                 "Hudson.getInstance();\n" +
                 "return \"Got instance!\";";
-        final File scriptFile = File.createTempFile("uno-choice", "63983");
+        final File scriptFile = Files.createTempFile("uno-choice", "63983").toFile();
         FileUtils.writeStringToFile(scriptFile, scriptText, Charset.defaultCharset(), false);
         final FileItem fi = new FileParameterValue.FileItemImpl(scriptFile);
         scriptlerHelper.saveScript(fi, true, "63983");
@@ -85,7 +86,7 @@ public void testGroovyScriptPendingSandboxRejected() throws Exception {
         final String scriptText = "import hudson.model.Hudson;\n" +
                 "Hudson.getInstance();\n" +
                 "return \"Got instance!\";";
-        final File scriptFile = File.createTempFile("uno-choice", "63983");
+        final File scriptFile = Files.createTempFile("uno-choice", "63983").toFile();
         FileUtils.writeStringToFile(scriptFile, scriptText, Charset.defaultCharset(), false);
         final FileItem fi = new FileParameterValue.FileItemImpl(scriptFile);
         scriptlerHelper.saveScript(fi, true, "63983");
@@ -111,7 +112,7 @@ public void testGroovyScriptPendingNoSandboxRejected() throws Exception {
         final String scriptText = "import hudson.model.Hudson;\n" +
                 "Hudson.getInstance();\n" +
                 "return \"Got instance!\";";
-        final File scriptFile = File.createTempFile("uno-choice", "63983");
+        final File scriptFile = Files.createTempFile("uno-choice", "63983").toFile();
         FileUtils.writeStringToFile(scriptFile, scriptText, Charset.defaultCharset(), false);
         final FileItem fi = new FileParameterValue.FileItemImpl(scriptFile);
         scriptlerHelper.saveScript(fi, true, "63983");
@@ -137,7 +138,7 @@ public void testGroovyScriptApprovedSandboxRejected() throws Exception {
         final String scriptText = "import hudson.model.Hudson;\n" +
                 "Hudson.getInstance();\n" +
                 "return \"Got instance!\";";
-        final File scriptFile = File.createTempFile("uno-choice", "63983");
+        final File scriptFile = Files.createTempFile("uno-choice", "63983").toFile();
         FileUtils.writeStringToFile(scriptFile, scriptText, Charset.defaultCharset(), false);
         final FileItem fi = new FileParameterValue.FileItemImpl(scriptFile);
         scriptlerHelper.saveScript(fi, true, "63983");