diff --git a/spring-core-test/src/main/java/org/springframework/aot/test/generator/compile/CompileWithTargetClassAccessClassLoader.java b/spring-core-test/src/main/java/org/springframework/aot/test/generator/compile/CompileWithTargetClassAccessClassLoader.java
index 141ba2f4e1..849c57f5d5 100644
--- a/spring-core-test/src/main/java/org/springframework/aot/test/generator/compile/CompileWithTargetClassAccessClassLoader.java
+++ b/spring-core-test/src/main/java/org/springframework/aot/test/generator/compile/CompileWithTargetClassAccessClassLoader.java
@@ -20,16 +20,21 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.util.Enumeration;
+import java.util.Set;
 
 /**
  * {@link ClassLoader} implementation to support
  * {@link CompileWithTargetClassAccess @CompileWithTargetClassAccess}.
  *
  * @author Phillip Webb
+ * @author Sam Brannen
  * @since 6.0
  */
 final class CompileWithTargetClassAccessClassLoader extends ClassLoader {
 
+	private static final Set<String> passthroughPackages =
+			Set.of("org.junit", "org.testng", "org.hamcrest");
+
 	private final ClassLoader testClassLoader;
 
 
@@ -41,7 +46,7 @@ final class CompileWithTargetClassAccessClassLoader extends ClassLoader {
 
 	@Override
 	public Class<?> loadClass(String name) throws ClassNotFoundException {
-		if (name.startsWith("org.junit") || name.startsWith("org.hamcrest")) {
+		if (passthroughPackages.stream().anyMatch(pkg -> name.startsWith(pkg))) {
 			return Class.forName(name, false, this.testClassLoader);
 		}
 		return super.loadClass(name);