diff --git a/aws-crt-kotlin/build.gradle.kts b/aws-crt-kotlin/build.gradle.kts
index 0fe1f52a..d6118488 100644
--- a/aws-crt-kotlin/build.gradle.kts
+++ b/aws-crt-kotlin/build.gradle.kts
@@ -198,8 +198,6 @@ if (testJavaVersion != null) {
 }
 
 tasks.withType<AbstractTestTask> {
-    if (this is Test) useJUnitPlatform()
-
     testLogging {
         events("passed", "skipped", "failed")
         showStandardStreams = true
diff --git a/aws-crt-kotlin/jvm/test/aws/sdk/kotlin/crt/http/HttpRequestResponseTest.kt b/aws-crt-kotlin/jvm/test/aws/sdk/kotlin/crt/http/HttpRequestResponseTest.kt
index f237cb81..db2af135 100644
--- a/aws-crt-kotlin/jvm/test/aws/sdk/kotlin/crt/http/HttpRequestResponseTest.kt
+++ b/aws-crt-kotlin/jvm/test/aws/sdk/kotlin/crt/http/HttpRequestResponseTest.kt
@@ -8,9 +8,6 @@ package aws.sdk.kotlin.crt.http
 import aws.sdk.kotlin.crt.util.Digest
 import aws.sdk.kotlin.crt.util.encodeToHex
 import kotlinx.coroutines.runBlocking
-import org.junit.jupiter.api.AfterAll
-import org.junit.jupiter.api.BeforeAll
-import org.junit.jupiter.api.TestInstance
 import org.mockserver.client.MockServerClient
 import org.mockserver.integration.ClientAndServer
 import org.mockserver.model.HttpRequest.request
@@ -20,19 +17,17 @@ import kotlin.test.*
 private val TEST_DOC_LINE = "This is a sample to prove that http downloads and uploads work."
 private val TEST_DOC_SHA256 = "c7fdb5314b9742467b16bd5ea2f8012190b5e2c44a005f7984f89aab58219534"
 
-@TestInstance(TestInstance.Lifecycle.PER_CLASS)
 class HttpRequestResponseTest : HttpClientTest() {
-
     lateinit var mockServer: MockServerClient
     lateinit var url: String
 
-    @BeforeAll
+    @BeforeTest
     fun setup() {
         mockServer = ClientAndServer.startClientAndServer(0)
         url = "http://localhost:${mockServer.port}"
     }
 
-    @AfterAll
+    @AfterTest
     fun tearDown() {
         mockServer.close()
     }
diff --git a/build-support/build.gradle.kts b/build-support/build.gradle.kts
index ca25bd95..0af73331 100644
--- a/build-support/build.gradle.kts
+++ b/build-support/build.gradle.kts
@@ -16,10 +16,6 @@ repositories {
 dependencies {
     compileOnly(kotlin("gradle-plugin"))
     compileOnly(kotlin("gradle-plugin-api"))
-
-    testImplementation(libs.junit.jupiter)
-    testImplementation(libs.junit.jupiter.params)
-    testImplementation(libs.kotlin.test.junit5)
 }
 
 gradlePlugin {
@@ -32,7 +28,6 @@ gradlePlugin {
 }
 
 tasks.test {
-    useJUnitPlatform()
     testLogging {
         events("passed", "skipped", "failed")
         showStandardStreams = true
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 81f0362a..c71e6f67 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -9,8 +9,6 @@ coroutines-version = "1.10.2"
 binary-compatibility-validator-version = "0.18.0"
 
 # testing
-junit-version = "5.13.2"
-kotest-version = "5.9.1"
 mock-server-version = "5.15.0"
 
 [libraries]
@@ -18,16 +16,12 @@ aws-kotlin-repo-tools-build-support = { module="aws.sdk.kotlin.gradle:build-supp
 crt-java = { module = "software.amazon.awssdk.crt:aws-crt", version.ref = "crt-java-version" }
 
 kotlin-stdlib = { module = "org.jetbrains.kotlin:kotlin-stdlib", version.ref = "kotlin-version"}
-kotlin-test-junit5 = { module = "org.jetbrains.kotlin:kotlin-test-junit5", version.ref = "kotlin-version" }
 
 kotlinx-coroutines-debug = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-debug", version.ref = "coroutines-version" }
 kotlinx-coroutines-test = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-test", version.ref = "coroutines-version" }
 kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "coroutines-version" }
 kotlinx-coroutines-jdk8 = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-jdk8", version.ref = "coroutines-version" }
 
-junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-version" }
-junit-jupiter-params = { module = "org.junit.jupiter:junit-jupiter-params", version.ref = "junit-version" }
-
 mockserver-netty = { module = "org.mock-server:mockserver-netty", version.ref = "mock-server-version" }
 
 [plugins]