diff --git a/build.gradle b/build.gradle
index 8a3207ccc85..e5913130731 100644
--- a/build.gradle
+++ b/build.gradle
@@ -188,6 +188,7 @@ configure(allprojects) { project ->
 				exclude group: "junit", name: "junit"
 			}
 			dependency "org.testng:testng:7.4.0"
+			dependency "org.junit.support:testng-engine:1.0.1"
 			dependency "org.hamcrest:hamcrest:2.1"
 			dependency "org.awaitility:awaitility:3.1.6"
 			dependency "org.assertj:assertj-core:3.20.2"
diff --git a/spring-test/spring-test.gradle b/spring-test/spring-test.gradle
index 365ce7d316f..026507a0281 100644
--- a/spring-test/spring-test.gradle
+++ b/spring-test/spring-test.gradle
@@ -77,43 +77,23 @@ dependencies {
 	testRuntimeOnly("org.junit.vintage:junit-vintage-engine") {
 		exclude group: "junit", module: "junit"
 	}
+	testRuntimeOnly("org.junit.support:testng-engine")
 	testRuntimeOnly("org.glassfish:javax.el")
 	testRuntimeOnly("com.sun.xml.bind:jaxb-core")
 	testRuntimeOnly("com.sun.xml.bind:jaxb-impl")
 }
 
-task junit(type: Test) {
-	description = "Runs JUnit 4 and JUnit Jupiter tests."
+test {
+	description = "Runs JUnit 4, JUnit Jupiter, and TestNG tests."
 	useJUnitPlatform {
+		includeEngines "junit-vintage", "junit-jupiter", "testng"
 		excludeTags "failing-test-case"
 	}
+	// We use `include` instead of `filter.includeTestsMatching`, since
+	// the latter results in some tests being executed/reported
+	// multiple times.
 	include(["**/*Tests.class", "**/*Test.class"])
-	exclude(["**/testng/**/*.*"])
 	systemProperty("testGroups", project.properties.get("testGroups"))
 	// Java Util Logging for the JUnit Platform.
 	// systemProperty("java.util.logging.manager", "org.apache.logging.log4j.jul.LogManager")
 }
-
-task testNG(type: Test) {
-	description = "Runs TestNG tests."
-	useTestNG()
-	include(["**/testng/**/*Tests.class", "**/testng/**/*Test.class"])
-	systemProperty("testGroups", project.properties.get("testGroups"))
-	// Show STD_OUT & STD_ERR of the test JVM(s) on the console:
-	// testLogging.showStandardStreams = true
-	// forkEvery 1
-}
-
-test {
-	description = "Runs all tests."
-	dependsOn junit, testNG
-	exclude(["**/*.*"])
-}
-
-task aggregateTestReports(type: TestReport) {
-	description = "Aggregates JUnit and TestNG test reports."
-	destinationDir = test.reports.html.outputLocation.get().getAsFile()
-	reportOn junit, testNG
-}
-
-check.dependsOn aggregateTestReports