diff --git a/Jenkinsfile b/Jenkinsfile
index 98e6d169d..aca93c979 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,14 +1,10 @@
 @Library('shared-libraries') _
 
 def getJava(){
-	if(env.JAVA_VERSION=="JAVA17"){
-		return "/home/builder/java/jdk-17.0.2"
-	}else if(env.JAVA_VERSION=="JAVA11"){
-		return "/home/builder/java/jdk-11.0.2"
-	}else if(env.JAVA_VERSION=="JAVA21"){
+	if (env.JAVA_VERSION == "JAVA21") {
 		return "/home/builder/java/jdk-21.0.1"
-	}else{
-		return "/home/builder/java/openjdk-1.8.0-262"
+	} else {
+		return "/home/builder/java/jdk-17.0.2"
 	}
 }
 
@@ -26,6 +22,7 @@ def setupDockerMarkLogic(String image){
     MARKLOGIC_IMAGE='''+image+''' MARKLOGIC_LOGS_VOLUME=marklogicLogs docker compose up -d --build
     echo "Waiting for MarkLogic server to initialize."
     sleep 60s
+		export JAVA_HOME=$JAVA_HOME_DIR
 		export GRADLE_USER_HOME=$WORKSPACE/$GRADLE_DIR
 		export PATH=$GRADLE_USER_HOME:$JAVA_HOME/bin:$PATH
 		./gradlew mlTestConnections
diff --git a/build.gradle b/build.gradle
index f5d11837e..5af224625 100644
--- a/build.gradle
+++ b/build.gradle
@@ -23,10 +23,10 @@ subprojects {
 		options.compilerArgs += ["-Xlint:unchecked", "-Xlint:deprecation"]
 	}
 
-	// To ensure that the Java Client continues to support Java 8, both source and target compatibility are set to 1.8.
 	java {
-		sourceCompatibility = 1.8
-		targetCompatibility = 1.8
+		toolchain {
+			languageVersion = JavaLanguageVersion.of(17)
+		}
 	}
 
 	configurations {
diff --git a/gradle.properties b/gradle.properties
index 43995279a..17da5b520 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 group=com.marklogic
-version=7.3-SNAPSHOT
+version=8.0-SNAPSHOT
 describedName=MarkLogic Java Client API
 publishUrl=file:../marklogic-java/releases
 
diff --git a/marklogic-client-api-functionaltests/build.gradle b/marklogic-client-api-functionaltests/build.gradle
index c12d6085f..489a1d077 100755
--- a/marklogic-client-api-functionaltests/build.gradle
+++ b/marklogic-client-api-functionaltests/build.gradle
@@ -19,7 +19,7 @@ dependencies {
 	testImplementation 'org.skyscreamer:jsonassert:1.5.3'
 	testImplementation 'org.slf4j:slf4j-api:2.0.17'
 	testImplementation 'commons-io:commons-io:2.17.0'
-	testImplementation 'com.squareup.okhttp3:okhttp:4.12.0'
+	testImplementation 'com.squareup.okhttp3:okhttp:5.1.0'
 	testImplementation "com.fasterxml.jackson.core:jackson-core:${jacksonVersion}"
 	testImplementation "com.fasterxml.jackson.core:jackson-databind:${jacksonVersion}"
 	testImplementation "org.jdom:jdom2:2.0.6.1"
@@ -32,7 +32,7 @@ dependencies {
 		exclude module: "commons-lang3"
 	}
 
-	testImplementation 'ch.qos.logback:logback-classic:1.3.15'
+	testImplementation 'ch.qos.logback:logback-classic:1.5.18'
 	testImplementation 'org.junit.jupiter:junit-jupiter:5.13.4'
 	testImplementation 'org.xmlunit:xmlunit-legacy:2.10.0'
 
diff --git a/marklogic-client-api/build.gradle b/marklogic-client-api/build.gradle
index b2bfdd46d..7bb2b8ffe 100644
--- a/marklogic-client-api/build.gradle
+++ b/marklogic-client-api/build.gradle
@@ -18,9 +18,9 @@ dependencies {
 	api "jakarta.xml.bind:jakarta.xml.bind-api:3.0.1"
 	implementation "org.glassfish.jaxb:jaxb-runtime:3.0.2"
 
-	implementation 'com.squareup.okhttp3:okhttp:4.12.0'
-	implementation 'com.squareup.okhttp3:logging-interceptor:4.12.0'
-	implementation 'io.github.rburgst:okhttp-digest:2.7'
+	implementation 'com.squareup.okhttp3:okhttp:5.1.0'
+	implementation 'com.squareup.okhttp3:logging-interceptor:5.1.0'
+	implementation 'io.github.rburgst:okhttp-digest:3.1.1'
 
 	// We tried upgrading to the org.eclipse.angus:angus-mail dependency, but we ran into significant performance issues
 	// with using the Java Client eval call in our Spark connector. Example - an eval() call for getting 50k URIs would
@@ -57,10 +57,10 @@ dependencies {
 	// Starting with mockito 5.x, Java 11 is required, so sticking with 4.x as we have to support Java 8.
 	testImplementation "org.mockito:mockito-core:4.11.0"
 	testImplementation "org.mockito:mockito-inline:4.11.0"
-	testImplementation "com.squareup.okhttp3:mockwebserver:4.12.0"
+	testImplementation "com.squareup.okhttp3:mockwebserver3:5.1.0"
 
 	testImplementation "com.fasterxml.jackson.dataformat:jackson-dataformat-xml:${jacksonVersion}"
-	testImplementation 'ch.qos.logback:logback-classic:1.3.15'
+	testImplementation 'ch.qos.logback:logback-classic:1.5.18'
 
 	// Using this to avoid a schema validation issue with the regular xercesImpl
 	testImplementation 'org.opengis.cite.xerces:xercesImpl-xsd11:2.12-beta-r1667115'
diff --git a/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/OAuthAuthenticationConfigurerTest.java b/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/OAuthAuthenticationConfigurerTest.java
index b6bee7c30..c8a2ddd8a 100644
--- a/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/OAuthAuthenticationConfigurerTest.java
+++ b/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/OAuthAuthenticationConfigurerTest.java
@@ -4,20 +4,23 @@
 package com.marklogic.client.impl.okhttp;
 
 import com.marklogic.client.DatabaseClientFactory;
+import mockwebserver3.MockWebServer;
 import okhttp3.Request;
-import okhttp3.mockwebserver.MockWebServer;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class OAuthAuthenticationConfigurerTest {
+class OAuthAuthenticationConfigurerTest {
 
 	@Test
-	void test() {
-		DatabaseClientFactory.OAuthContext authContext = new DatabaseClientFactory.OAuthContext("abc123");
-		Request request = new Request.Builder().url(new MockWebServer().url("/url-doesnt-matter")).build();
+	void test() throws Exception {
+		try (MockWebServer server = new MockWebServer()) {
+			server.start();
+			Request request = new Request.Builder().url(server.url("/url-doesnt-matter")).build();
 
-		Request authenticatedRequest = new OAuthAuthenticationConfigurer().makeAuthenticatedRequest(request, authContext);
-		assertEquals("Bearer abc123", authenticatedRequest.header("Authorization"));
+			DatabaseClientFactory.OAuthContext authContext = new DatabaseClientFactory.OAuthContext("abc123");
+			Request authenticatedRequest = new OAuthAuthenticationConfigurer().makeAuthenticatedRequest(request, authContext);
+			assertEquals("Bearer abc123", authenticatedRequest.header("Authorization"));
+		}
 	}
 }
diff --git a/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/TokenAuthenticationInterceptorTest.java b/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/TokenAuthenticationInterceptorTest.java
index 2f1496497..b1529fb2c 100644
--- a/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/TokenAuthenticationInterceptorTest.java
+++ b/marklogic-client-api/src/test/java/com/marklogic/client/impl/okhttp/TokenAuthenticationInterceptorTest.java
@@ -4,10 +4,11 @@
 package com.marklogic.client.impl.okhttp;
 
 import com.marklogic.client.ext.helper.LoggingObject;
+import mockwebserver3.MockResponse;
+import mockwebserver3.MockWebServer;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
-import okhttp3.mockwebserver.MockResponse;
-import okhttp3.mockwebserver.MockWebServer;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -23,15 +24,17 @@
  * Uses OkHttp's MockWebServer to completely mock a MarkLogic instance so that we can control what response codes are
  * returned and processed by TokenAuthenticationInterceptor.
  */
-public class TokenAuthenticationInterceptorTest extends LoggingObject {
+class TokenAuthenticationInterceptorTest extends LoggingObject {
 
 	private MockWebServer mockWebServer;
 	private FakeTokenGenerator fakeTokenGenerator;
 	private OkHttpClient okHttpClient;
 
 	@BeforeEach
-	void beforeEach() {
+	void beforeEach() throws IOException {
 		mockWebServer = new MockWebServer();
+		mockWebServer.start();
+
 		fakeTokenGenerator = new FakeTokenGenerator();
 
 		ProgressDataCloudAuthenticationConfigurer.TokenAuthenticationInterceptor interceptor =
@@ -43,6 +46,11 @@ void beforeEach() {
 		okHttpClient = new OkHttpClient.Builder().addInterceptor(interceptor).build();
 	}
 
+	@AfterEach
+	void tearDown() {
+		mockWebServer.close();
+	}
+
 	@Test
 	void receive401() {
 		enqueueResponseCodes(200, 200, 401, 200);
@@ -110,7 +118,7 @@ void multipleThreads() throws Exception {
 	 */
 	private void enqueueResponseCodes(int... codes) {
 		for (int code : codes) {
-			mockWebServer.enqueue(new MockResponse().setResponseCode(code));
+			mockWebServer.enqueue(new MockResponse.Builder().code(code).build());
 		}
 	}
 
diff --git a/ml-development-tools/build.gradle b/ml-development-tools/build.gradle
index 84c83e245..82dfc7513 100644
--- a/ml-development-tools/build.gradle
+++ b/ml-development-tools/build.gradle
@@ -71,10 +71,10 @@ publishing {
 }
 
 compileKotlin {
-	kotlinOptions.jvmTarget = '1.8'
+	kotlinOptions.jvmTarget = '17'
 }
 compileTestKotlin {
-	kotlinOptions.jvmTarget = '1.8'
+	kotlinOptions.jvmTarget = '17'
 }
 
 tasks.register("generateTests", JavaExec) {