[FIXED] Some Kotlin libraries attached to this project were read by a newer Kotlin compiler and can't be read. Please update Kotlin Plugin


I am facing an error:

Some Kotlin libraries attached to this project were read by a newer Kotlin compiler and can’t be read. Please update Kotlin Plugin

I just created an application and started facing this error:
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The Kotlin plugin shows the following:

enter image description here

I tried to change ext.kotlin_version:
enter image description here

My build.gradle:

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    ext.kotlin_version = "1.4.32"
    repositories {
    dependencies {
        classpath "com.android.tools.build:gradle:4.1.1"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files

allprojects {
    repositories {

task clean(type: Delete) {
    delete rootProject.buildDir

My build.gradle(app):

plugins {
    id 'com.android.application'
    id 'kotlin-android'

android {
    compileSdkVersion 31
    buildToolsVersion '30.0.1'

    defaultConfig {
        applicationId "com.yousufjamil.myj"
        minSdkVersion 16
        targetSdkVersion 31
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    kotlinOptions {
        jvmTarget = '1.8'

dependencies {

    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation 'androidx.core:core-ktx:1.8.0'
    implementation 'androidx.appcompat:appcompat:1.4.2'
    implementation 'com.google.android.material:material:1.6.1'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

I would appreciate any help. Thank You!


You need to update almost everything, I believe.

currently for Gradle we have

coming to Kotlin, the current version is 1.6.21

repository jcenter() is deprecated and has been replaced by mavenCentral()

If you try to use jcenter() it will give a warning

JCenter Maven repository is no longer receiving updates: newer library versions may be available elsewhere

Also, check if there are any updates available for Android Studio.

Answered By – lets start coding

Answer Checked By – Timothy Miller (Easybugfix Admin)

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