Travis CI Build failing on Android app Unsupported major.minor version 52

I'm trying to build using Travis CI on my Android project with this .travis.yml file ``` language: android android: components: - platform-tools - tools - build-tools-23.0.3 - android-23 - sys-img-armeabi-v7a-android-23 - sys-img-x86-android-23 ``` Here is my app level build.gradle: ``` apply plugin: 'com.android.application' android { compileSdkVersion 23 buildToolsVersion "23.0.3" defaultConfig { applicationId "com.myname.myproject" minSdkVersion 19 targetSdkVersion 23 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } debug{ testCoverageEnabled = true } }} dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:23.4.0' compile 'com.android.support:design:23.4.0' testCompile "org.robolectric:robolectric:3.1.2" testCompile 'org.khronos:opengl-api:gl1.1-android-2.1_r1' testCompile 'junit:junit:4.12' testCompile 'org.mockito:mockito-core:1.10.19' androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) ``` } I am getting this failure message on Travis CI: ``` FAILURE: Build failed with an exception. * Where: Build file '/home/travis/build/myname/myproject/app/build.gradle' line: 1 * What went wrong: A problem occurred evaluating project ':app'. > java.lang.UnsupportedClassVersionError: com/android/build/gradle/AppPlugin : Unsupported major.minor version 52.0 * Try: Run with --stacktrace option to get the stack trace. Run with --info or -- debug option to get more log output. BUILD FAILED ``` From the error, it seems that it has something to do with the Java version. I notice that Travis uses Java version 1.7.0_76. I have tried some of the solutions at Unsupported major.minor version 52.0 in my app. None of them have worked for me. For instance, this doesn't seem to work: ``` android { ... compileOptions { sourceCompatibility JavaVersion.VERSION_1_7 targetCompatibility JavaVersion.VERSION_1_7 } ``` } UPDATE: I fixed this by adding `jdk: oraclejdk8` to the second line of my `.travis.yml` file after `language:android`