diff --git a/README.md b/README.md
index 895f47af..f3f6fb55 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@
 
 ### Dependencies
 
-Clappr is a Kotlin library. If your app is too, be sure Kotlin version is `1.2.71` or bigger, and Android Support version is `28.0.0` or bigger.
+Clappr is a Kotlin library. If your app is too, be sure Kotlin version is `1.3.41` or bigger, and Android Support version is `28.0.0` or bigger.
 
 The minimal API level supported is `16` `(4.1)`.
 
@@ -36,7 +36,7 @@ After cloning Clappr project, add following lines to `dependencies` in `project/
 dependencies {
     ...
     implementation project(':clappr')
-    implementation "org.jetbrains.kotlin:kotlin-stdlib:1.2.71"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:1.3.41"
     ...
 }
 ```
@@ -66,7 +66,7 @@ Following, add following lines to `dependencies` section in `project/build.gradl
 ```
 dependencies {
     ...
-    implementation "org.jetbrains.kotlin:kotlin-stdlib:1.2.71"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:1.3.41"
     implementation "com.android.support:appcompat-v7:28.0.0"
     implementation "com.android.support:support-v4:28.0.0"
     implementation 'com.google.android.exoplayer:exoplayer:2.9.2'
diff --git a/build.gradle b/build.gradle
index dab5d652..2682179a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.21'
+    ext.kotlin_version = '1.3.41'
     ext.android_support_version = '28.0.0'
 
 
@@ -9,14 +9,11 @@ buildscript {
         mavenCentral()
         mavenLocal()
         jcenter()
-        maven {
-            url 'https://maven.google.com/'
-            name 'Google'
-        }
+        google()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.1'
+        classpath 'com.android.tools.build:gradle:3.4.2'
         classpath 'net.saliman:gradle-cobertura-plugin:2.2.5'
         classpath 'org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.3.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
@@ -28,9 +25,6 @@ allprojects {
         mavenCentral()
         mavenLocal()
         jcenter()
-        maven {
-            url 'https://maven.google.com/'
-            name 'Google'
-        }
+        google()
     }
 }
diff --git a/clappr/build.gradle b/clappr/build.gradle
index 2abc994e..a932b659 100644
--- a/clappr/build.gradle
+++ b/clappr/build.gradle
@@ -20,7 +20,7 @@ apply plugin: 'org.jetbrains.dokka-android'
 apply from: 'versioning.gradle'
 
 group = 'io.clappr.player'
-version = '0.27.0'
+version = '0.27.1'
 
 def publishAttrs = buildPublishAttrs(version)
 
diff --git a/clappr/src/main/kotlin/io/clappr/player/Player.kt b/clappr/src/main/kotlin/io/clappr/player/Player.kt
index 2bd03d66..7935d650 100644
--- a/clappr/src/main/kotlin/io/clappr/player/Player.kt
+++ b/clappr/src/main/kotlin/io/clappr/player/Player.kt
@@ -188,6 +188,10 @@ open class Player(private val base: BaseObject = BaseObject(),
         core = Core(options)
     }
 
+    protected fun destroyCore() {
+        core = null
+    }
+
     /**
      * Load a new media. Always make sure that the stop() method was called before invoking this
      *
diff --git a/doc/clappr/io.clappr.player/-player/index.md b/doc/clappr/io.clappr.player/-player/index.md
index 30d155a0..3bc291a0 100644
--- a/doc/clappr/io.clappr.player/-player/index.md
+++ b/doc/clappr/io.clappr.player/-player/index.md
@@ -35,6 +35,7 @@ Once instantiated it should be [configured](configure.md) and added to a view hi
 | Name | Summary |
 |---|---|
 | [configure](configure.md) | `open fun configure(options: `[`Options`](../../io.clappr.player.base/-options/index.md)`): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html)<br>Configure Player. This configuration must be performed before adding fragment to a view hierarchy. |
+| [destroyCore](destroy-core.md) | `fun destroyCore(): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) |
 | [holdKeyEvent](hold-key-event.md) | `fun holdKeyEvent(event: `[`KeyEvent`](https://developer.android.com/reference/android/view/KeyEvent.html)`): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) |
 | [load](load.md) | `fun load(source: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`, mimeType: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`? = null): `[`Boolean`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)<br>Load a new media. Always make sure that the stop() method was called before invoking this`fun load(source: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`): `[`Boolean`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) |
 | [onCreateView](on-create-view.md) | `open fun onCreateView(inflater: `[`LayoutInflater`](https://developer.android.com/reference/android/view/LayoutInflater.html)`, container: `[`ViewGroup`](https://developer.android.com/reference/android/view/ViewGroup.html)`?, savedInstanceState: `[`Bundle`](https://developer.android.com/reference/android/os/Bundle.html)`?): `[`View`](https://developer.android.com/reference/android/view/View.html) |