diff --git a/source-release/src/test/java/org/apache/its/IT_000_BasicArchiveCreation.java b/source-release/src/test/java/org/apache/its/IT_000_BasicArchiveCreation.java
index 74872b3..0614692 100644
--- a/source-release/src/test/java/org/apache/its/IT_000_BasicArchiveCreation.java
+++ b/source-release/src/test/java/org/apache/its/IT_000_BasicArchiveCreation.java
@@ -25,7 +25,6 @@
 import java.util.HashSet;
 import java.util.Set;
 
-import junit.framework.Assert;
 import org.apache.maven.it.VerificationException;
 import org.apache.maven.it.Verifier;
 import org.junit.Test;
@@ -35,6 +34,7 @@
 import static org.apache.its.util.TestUtils.assertZipContents;
 import static org.apache.its.util.TestUtils.createVerifier;
 import static org.apache.its.util.TestUtils.getTestDir;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 
 public class IT_000_BasicArchiveCreation {
 
@@ -53,7 +53,7 @@ public void execute() throws VerificationException, IOException, URISyntaxExcept
 
         // make sure the tar did NOT get created by default
         File tarAssemblyFile = new File(testDir, "target/" + BASENAME + "-" + VERSION + "-source-release.tar.gz");
-        Assert.assertFalse("tar assembly should not have been created", tarAssemblyFile.exists());
+        assertFalse(tarAssemblyFile.exists(), "tar assembly should not have been created");
 
         File assembly = new File(testDir, "target/" + BASENAME + "-" + VERSION + "-source-release.zip");
 
diff --git a/source-release/src/test/java/org/apache/its/IT_SingleModule.java b/source-release/src/test/java/org/apache/its/IT_SingleModule.java
index aa75a3b..26f1197 100644
--- a/source-release/src/test/java/org/apache/its/IT_SingleModule.java
+++ b/source-release/src/test/java/org/apache/its/IT_SingleModule.java
@@ -24,7 +24,6 @@
 import java.util.HashSet;
 import java.util.Set;
 
-import junit.framework.Assert;
 import org.apache.maven.it.VerificationException;
 import org.apache.maven.it.Verifier;
 import org.junit.Test;
@@ -33,6 +32,7 @@
 import static org.apache.its.util.TestUtils.assertZipContents;
 import static org.apache.its.util.TestUtils.createVerifier;
 import static org.apache.its.util.TestUtils.getTestDir;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class IT_SingleModule {
 
@@ -51,7 +51,7 @@ public void execute() throws VerificationException, IOException, URISyntaxExcept
         verifier.resetStreams();
 
         File zipAssemblyFile = new File(testDir, "target/" + BASENAME + "-" + VERSION + "-source-release.zip");
-        Assert.assertTrue("zip assembly should  have been created", zipAssemblyFile.exists());
+        assertTrue(zipAssemblyFile.exists(), "zip assembly should  have been created");
 
         Set<String> required = new HashSet<>();
 
diff --git a/source-release/src/test/java/org/apache/its/IT_ZipAndTarCreation.java b/source-release/src/test/java/org/apache/its/IT_ZipAndTarCreation.java
index 258cecc..9922838 100644
--- a/source-release/src/test/java/org/apache/its/IT_ZipAndTarCreation.java
+++ b/source-release/src/test/java/org/apache/its/IT_ZipAndTarCreation.java
@@ -25,7 +25,6 @@
 import java.util.HashSet;
 import java.util.Set;
 
-import junit.framework.Assert;
 import org.apache.maven.it.VerificationException;
 import org.apache.maven.it.Verifier;
 import org.junit.Test;
@@ -36,6 +35,7 @@
 import static org.apache.its.util.TestUtils.assertZipContents;
 import static org.apache.its.util.TestUtils.createVerifier;
 import static org.apache.its.util.TestUtils.getTestDir;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class IT_ZipAndTarCreation {
 
@@ -54,10 +54,10 @@ public void execute() throws VerificationException, IOException, URISyntaxExcept
         verifier.resetStreams();
 
         File tarAssemblyFile = new File(testDir, "target/" + BASENAME + "-" + VERSION + "-source-release.tar.gz");
-        Assert.assertTrue("tar assembly should  have been created", tarAssemblyFile.exists());
+        assertTrue(tarAssemblyFile.exists(), "tar assembly should  have been created");
 
         File zipAssemblyFile = new File(testDir, "target/" + BASENAME + "-" + VERSION + "-source-release.zip");
-        Assert.assertTrue("zip assembly should  have been created", zipAssemblyFile.exists());
+        assertTrue(zipAssemblyFile.exists(), "zip assembly should  have been created");
 
         Set<String> required = new HashSet<>();
 
diff --git a/source-release/src/test/java/org/apache/its/util/TestUtils.java b/source-release/src/test/java/org/apache/its/util/TestUtils.java
index a8bcfb6..f7b9979 100644
--- a/source-release/src/test/java/org/apache/its/util/TestUtils.java
+++ b/source-release/src/test/java/org/apache/its/util/TestUtils.java
@@ -36,8 +36,8 @@
 import org.apache.maven.it.Verifier;
 import org.codehaus.plexus.archiver.tar.GZipTarFile;
 
-import static junit.framework.Assert.assertTrue;
-import static junit.framework.Assert.fail;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
 public class TestUtils {
 
@@ -71,7 +71,7 @@ public static String archivePathFromProject(String artifactId, String version, S
     }
 
     public static void assertTarContents(Set<String> required, Set<String> banned, File assembly) throws IOException {
-        assertTrue("Assembly archive missing: " + assembly, assembly.isFile());
+        assertTrue(assembly.isFile(), "Assembly archive missing: " + assembly);
 
         GZipTarFile tarFile = null;
         try {
@@ -93,7 +93,7 @@ public static void assertTarContents(Set<String> required, Set<String> banned, F
 
     public static void assertZipContents(Set<String> required, Set<String> banned, File assembly)
             throws ZipException, IOException {
-        assertTrue("Assembly archive missing: " + assembly, assembly.isFile());
+        assertTrue(assembly.isFile(), "Assembly archive missing: " + assembly);
 
         try (ZipFile zf = new ZipFile(assembly)) {
             LinkedHashSet<String> pathSet = new LinkedHashSet<>();