diff --git a/src/test/java/com/exasol/clusterlogs/MappedClusterLogsIT.java b/src/test/java/com/exasol/clusterlogs/MappedClusterLogsIT.java
index a8a7216d..081b9642 100644
--- a/src/test/java/com/exasol/clusterlogs/MappedClusterLogsIT.java
+++ b/src/test/java/com/exasol/clusterlogs/MappedClusterLogsIT.java
@@ -3,15 +3,14 @@
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.equalTo;
 
-import java.io.File;
-import java.io.IOException;
+import java.io.*;
+import java.nio.file.Files;
 import java.nio.file.Path;
 
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
 import org.testcontainers.junit.jupiter.Container;
 import org.testcontainers.junit.jupiter.Testcontainers;
-import org.testcontainers.shaded.com.google.common.io.Files;
 
 import com.exasol.containers.ExasolContainer;
 
@@ -21,13 +20,21 @@ class MappedClusterLogsIT {
     private static final Path TEMP_DIR = createTempDir();
 
     private static Path createTempDir() {
-        final File tempDir = Files.createTempDir();
-        tempDir.deleteOnExit();
-        return tempDir.toPath();
+        final Path tempDir = createTempPath();
+        tempDir.toFile().deleteOnExit();
+        return tempDir;
+    }
+
+    private static Path createTempPath() {
+        try {
+            return Files.createTempDirectory("MappedClusterLogsIT");
+        } catch (final IOException exception) {
+            throw new UncheckedIOException(exception);
+        }
     }
 
     @Container
-    private static final ExasolContainer<? extends ExasolContainer<?>> CONTAINER = new ExasolContainer<>() //
+    private static final ExasolContainer<? extends ExasolContainer<?>> CONTAINER = new ExasolContainer<>("8.23.0") //
             .withClusterLogsPath(TEMP_DIR) //
             .withRequiredServices();
 
@@ -37,4 +44,4 @@ void testMapClusterLogs() throws InterruptedException, IOException {
         final File syslogFile = TEMP_DIR.resolve("syslog").toFile();
         assertThat("File " + syslogFile + " exists", syslogFile.exists(), equalTo(true));
     }
-}
\ No newline at end of file
+}
diff --git a/src/test/java/com/exasol/containers/tls/CertificateProviderIT.java b/src/test/java/com/exasol/containers/tls/CertificateProviderIT.java
index bd58a14c..1b2b4e63 100644
--- a/src/test/java/com/exasol/containers/tls/CertificateProviderIT.java
+++ b/src/test/java/com/exasol/containers/tls/CertificateProviderIT.java
@@ -28,8 +28,8 @@ void testGetCertificate() {
         final Optional<X509Certificate> optionalCertificate = CONTAINER.getTlsCertificate();
         final var certificate = optionalCertificate.get();
         assertAll(() -> assertThat(certificate, notNullValue()),
-                () -> assertThat(certificate.getIssuerDN().getName(), equalTo("CN=exacluster.local")),
-                () -> assertThat(certificate.getSubjectDN().getName(),
+                () -> assertThat(certificate.getIssuerX500Principal().getName(), equalTo("CN=exacluster.local")),
+                () -> assertThat(certificate.getSubjectX500Principal().getName(),
                         either(equalTo("CN=*.exacluster.local")).or(equalTo("CN=srv.exacluster.local"))),
                 () -> assertThat(certificate.getNotBefore(), lessThan(now)),
                 () -> assertThat(certificate.getNotAfter(), greaterThan(now)));
diff --git a/src/test/java/com/exasol/containers/tls/CertificateProviderTest.java b/src/test/java/com/exasol/containers/tls/CertificateProviderTest.java
index 893171d9..2d16e7f5 100644
--- a/src/test/java/com/exasol/containers/tls/CertificateProviderTest.java
+++ b/src/test/java/com/exasol/containers/tls/CertificateProviderTest.java
@@ -46,7 +46,7 @@ void testGetCertificateSucceeds() throws ExasolContainerException {
         final Optional<X509Certificate> certificate = this.certificateProvider.getCertificate();
         assertThat(certificate.isPresent(), is(true));
         assertThat(certificate.get(), notNullValue());
-        assertThat(certificate.get().getIssuerDN().getName(), equalTo("CN=exacluster.local"));
+        assertThat(certificate.get().getIssuerX500Principal().getName(), equalTo("CN=exacluster.local"));
     }
 
     private void simulateTlsCert(final String certContent) throws ExasolContainerException {