diff --git a/pom.xml b/pom.xml
index 76209763..51c810ed 100644
--- a/pom.xml
+++ b/pom.xml
@@ -182,6 +182,12 @@
       <version>3.26.3</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.awaitility</groupId>
+      <artifactId>awaitility</artifactId>
+      <version>4.2.1</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.apache.maven.plugin-testing</groupId>
       <artifactId>maven-plugin-testing-harness</artifactId>
diff --git a/src/test/java/ch/ivyteam/ivy/maven/TestSlf4jWarningConfiguration.java b/src/test/java/ch/ivyteam/ivy/maven/TestSlf4jWarningConfiguration.java
index 4ec7d797..5ae30929 100644
--- a/src/test/java/ch/ivyteam/ivy/maven/TestSlf4jWarningConfiguration.java
+++ b/src/test/java/ch/ivyteam/ivy/maven/TestSlf4jWarningConfiguration.java
@@ -2,21 +2,20 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 import org.slf4j.simple.SimpleLogger;
 
 import ch.ivyteam.ivy.maven.engine.Slf4jSimpleEngineProperties;
 
-public class TestSlf4jWarningConfiguration {
+class TestSlf4jWarningConfiguration {
   /*
    * XIVY-3123 Streamline the log output to be maven-like, instead of logging
    * [WARN] we want [WARNING]. This allows us to use the maven log parser on our
    * jenkins pipelines to avoid introducing new warnings.
    */
   @Test
-  public void mavenLikeWarning() {
+  void mavenLikeWarning() {
     Slf4jSimpleEngineProperties.install();
-
     assertThat(System.getProperty(SimpleLogger.WARN_LEVEL_STRING_KEY))
             .as("SLF4J warning string is not maven-like [WARNING]")
             .isEqualTo("WARNING");
diff --git a/src/test/java/ch/ivyteam/ivy/maven/engine/deploy/dir/TestFileLogForwarder.java b/src/test/java/ch/ivyteam/ivy/maven/engine/deploy/dir/TestFileLogForwarder.java
index b030adba..3d91dcc8 100644
--- a/src/test/java/ch/ivyteam/ivy/maven/engine/deploy/dir/TestFileLogForwarder.java
+++ b/src/test/java/ch/ivyteam/ivy/maven/engine/deploy/dir/TestFileLogForwarder.java
@@ -17,42 +17,47 @@
 package ch.ivyteam.ivy.maven.engine.deploy.dir;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.awaitility.Awaitility.await;
 
-import java.io.File;
 import java.io.IOException;
-import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
 
-import org.apache.commons.io.FileUtils;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 
 import ch.ivyteam.ivy.maven.log.LogCollector;
 import ch.ivyteam.ivy.maven.log.LogCollector.LogEntry;
 
-public class TestFileLogForwarder {
+class TestFileLogForwarder {
+
+  @TempDir
+  Path tempDir;
 
   @Test
-  public void fileToMavenLog() throws Exception {
-    File fakeEngineLog = Files.createTempFile("myProject.iar", ".deploymentLog").toFile();
-    LogCollector mavenLog = new LogCollector();
-    FileLogForwarder logForwarder = new FileLogForwarder(fakeEngineLog, mavenLog,
-            new EngineLogLineHandler(mavenLog));
+  void fileToMavenLog() throws Exception {
+    var fakeEngineLog = tempDir.resolve("myProject.iar.deploymentLog");
+    Files.createFile(fakeEngineLog);
+    var mavenLog = new LogCollector();
+    var logForwarder = new FileLogForwarder(fakeEngineLog.toFile(), mavenLog, new EngineLogLineHandler(mavenLog));
+    var log = new FakeLogger(fakeEngineLog);
 
     try {
       logForwarder.activate();
 
-      logAndWait(fakeEngineLog, "WARNING: starting");
-      assertThat(mavenLog.getWarnings()).hasSize(1);
+      log.write("WARNING: starting");
+      await().untilAsserted(() -> assertThat(mavenLog.getWarnings()).hasSize(1));
       LogEntry firstEntry = mavenLog.getWarnings().get(mavenLog.getWarnings().size() - 1);
       assertThat(firstEntry.toString()).isEqualTo(" ENGINE: starting");
 
-      logAndWait(fakeEngineLog, "WARNING: finished");
-      assertThat(mavenLog.getWarnings()).hasSize(2);
+      log.write("WARNING: finished");
+      await().untilAsserted(() -> assertThat(mavenLog.getWarnings()).hasSize(2));
       LogEntry lastEntry = mavenLog.getWarnings().get(mavenLog.getWarnings().size() - 1);
       assertThat(lastEntry.toString()).isEqualTo(" ENGINE: finished");
 
-      logAndWait(fakeEngineLog, "INFO: hi");
-      assertThat(mavenLog.getDebug()).hasSize(1);
+      log.write("INFO: hi");
+      await().untilAsserted(() -> assertThat(mavenLog.getDebug()).hasSize(1));
       LogEntry debugEntry = mavenLog.getDebug().get(mavenLog.getDebug().size() - 1);
       assertThat(debugEntry.toString()).isEqualTo(" ENGINE: hi");
 
@@ -60,14 +65,24 @@ public void fileToMavenLog() throws Exception {
       logForwarder.deactivate();
     }
 
-    logAndWait(fakeEngineLog, "WARNING: illegal");
-    assertThat(mavenLog.getWarnings()).hasSize(2);
+    log.write("WARNING: illegal");
+    await().untilAsserted(() -> assertThat(mavenLog.getWarnings()).hasSize(2));
   }
 
-  private static void logAndWait(File fakeEngineLog, String log) throws IOException, InterruptedException {
-    boolean append = true;
-    FileUtils.write(fakeEngineLog, log, StandardCharsets.UTF_8, append);
-    Thread.sleep(1000);
-  }
+  private static final class FakeLogger {
 
+    private final Path file;
+
+    private FakeLogger(Path file) {
+      this.file = file;
+    }
+
+    private void write(String log) {
+      try {
+        Files.writeString(file, log, StandardOpenOption.APPEND);
+      } catch (IOException ex) {
+        throw new RuntimeException(ex);
+      }
+    }
+  }
 }
diff --git a/src/test/java/ch/ivyteam/ivy/maven/engine/download/TestLatestMinorVersionRange.java b/src/test/java/ch/ivyteam/ivy/maven/engine/download/TestLatestMinorVersionRange.java
index 0993911c..c5e53e7b 100644
--- a/src/test/java/ch/ivyteam/ivy/maven/engine/download/TestLatestMinorVersionRange.java
+++ b/src/test/java/ch/ivyteam/ivy/maven/engine/download/TestLatestMinorVersionRange.java
@@ -3,12 +3,12 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class TestLatestMinorVersionRange {
+class TestLatestMinorVersionRange {
 
   @Test
-  public void get() {
+  void get() {
     assertThat(new LatestMinorVersionRange("8.0.0").get().toString()).isEqualTo("[8.0.0,8.1.0)");
     assertThat(new LatestMinorVersionRange("8.0.1").get().toString()).isEqualTo("[8.0.1,8.1.0)");
     assertThat(new LatestMinorVersionRange("8.1.0").get().toString()).isEqualTo("[8.1.0,8.2.0)");