diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index a4d9323..95b5233 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -3,6 +3,9 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <compositeConfiguration>
+          <compositeBuild compositeDefinitionSource="SCRIPT" />
+        </compositeConfiguration>
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="modules">
@@ -14,6 +17,7 @@
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
+        <option name="testRunner" value="PLATFORM" />
       </GradleProjectSettings>
     </option>
   </component>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 6399366..a5d31c0 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -27,17 +27,7 @@
       </value>
     </option>
   </component>
-  <component name="ProjectLevelVcsManager" settingsEditedManually="false">
-    <OptionsSetting value="true" id="Add" />
-    <OptionsSetting value="true" id="Remove" />
-    <OptionsSetting value="true" id="Checkout" />
-    <OptionsSetting value="true" id="Update" />
-    <OptionsSetting value="true" id="Status" />
-    <OptionsSetting value="true" id="Edit" />
-    <ConfirmationsSetting value="0" id="Add" />
-    <ConfirmationsSetting value="0" id="Remove" />
-  </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/build.gradle b/build.gradle
index ce5e56b..cc7a77c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,9 +3,10 @@
 buildscript {
   repositories {
     jcenter()
+      google()
   }
   dependencies {
-    classpath 'com.android.tools.build:gradle:2.2.3'
+    classpath 'com.android.tools.build:gradle:3.5.1'
     classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.4'
     classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
 
@@ -17,6 +18,7 @@ buildscript {
 allprojects {
   repositories {
     jcenter()
+      google()
   }
 }
 
diff --git a/expandablecheckrecyclerview/build.gradle b/expandablecheckrecyclerview/build.gradle
index 8d565c1..837a920 100644
--- a/expandablecheckrecyclerview/build.gradle
+++ b/expandablecheckrecyclerview/build.gradle
@@ -26,14 +26,14 @@ apply plugin: 'com.android.library'
 //}
 
 android {
-  compileSdkVersion 23
-  buildToolsVersion "23.0.3"
+  compileSdkVersion 28
 
-  defaultConfig {
+    defaultConfig {
     minSdkVersion 16
-    targetSdkVersion 23
+    targetSdkVersion 28
     versionCode 5
     versionName "1.5"
+    multiDexEnabled true
   }
   buildTypes {
     release {
@@ -43,17 +43,17 @@ android {
 }
 
 dependencies {
-  compile fileTree(dir: 'libs', include: ['*.jar'])
-  compile 'com.thoughtbot:expandablerecyclerview:1.3'
+  implementation fileTree(dir: 'libs', include: ['*.jar'])
+  implementation 'com.thoughtbot:expandablerecyclerview:1.3'
 
   //android
-  compile 'com.android.support:appcompat-v7:23.4.0'
-  compile 'com.android.support:recyclerview-v7:23.4.0'
+  implementation 'androidx.appcompat:appcompat:1.1.0'
+  implementation 'androidx.recyclerview:recyclerview:1.0.0'
 
   //unit tests
-  testCompile 'junit:junit:4.12'
-  testCompile 'org.robolectric:robolectric:3.2.1'
-  testCompile 'org.mockito:mockito-core:1.10.5'
+  testImplementation 'junit:junit:4.12'
+  testImplementation 'org.robolectric:robolectric:4.3.1'
+  testImplementation 'org.mockito:mockito-core:1.10.5'
 }
 
 //apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle'
diff --git a/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnCheckChildClickListener.java b/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnCheckChildClickListener.java
index 6f54594..95229aa 100644
--- a/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnCheckChildClickListener.java
+++ b/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnCheckChildClickListener.java
@@ -1,6 +1,5 @@
 package com.thoughtbot.expandablecheckrecyclerview.listeners;
 
-import android.support.v7.widget.RecyclerView;
 import android.view.View;
 import com.thoughtbot.expandablecheckrecyclerview.CheckableChildRecyclerViewAdapter;
 import com.thoughtbot.expandablecheckrecyclerview.models.CheckedExpandableGroup;
diff --git a/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnChildCheckChangedListener.java b/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnChildCheckChangedListener.java
index edd8f24..11debd3 100644
--- a/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnChildCheckChangedListener.java
+++ b/expandablecheckrecyclerview/src/main/java/com/thoughtbot/expandablecheckrecyclerview/listeners/OnChildCheckChangedListener.java
@@ -1,8 +1,6 @@
 package com.thoughtbot.expandablecheckrecyclerview.listeners;
 
-import android.support.v7.widget.RecyclerView;
 import android.view.View;
-import com.thoughtbot.expandablecheckrecyclerview.viewholders.CheckableChildViewHolder;
 
 /**
  * Interface definition for a callback to be invoked when a CheckableChildViewHolder#checkable
diff --git a/expandablerecyclerview/build.gradle b/expandablerecyclerview/build.gradle
index 27b1adf..655e608 100644
--- a/expandablerecyclerview/build.gradle
+++ b/expandablerecyclerview/build.gradle
@@ -25,15 +25,15 @@ apply plugin: 'com.android.library'
 //}
 
 android {
-  compileSdkVersion 23
-  buildToolsVersion "23.0.3"
+  compileSdkVersion 28
 
-  defaultConfig {
+    defaultConfig {
     minSdkVersion 16
-    targetSdkVersion 23
+    targetSdkVersion 28
     versionCode 2
     versionName "1.4"
-  }
+    multiDexEnabled true
+    }
   buildTypes {
     release {
       minifyEnabled false
@@ -43,13 +43,13 @@ android {
 
 dependencies {
   //android
-  compile 'com.android.support:appcompat-v7:23.4.0'
-  compile 'com.android.support:recyclerview-v7:23.4.0'
+  implementation 'androidx.appcompat:appcompat:1.1.0'
+  implementation 'androidx.recyclerview:recyclerview:1.0.0'
 
   //unit tests
-  testCompile 'junit:junit:4.12'
-  testCompile 'org.robolectric:robolectric:3.2.1'
-  testCompile 'org.mockito:mockito-core:1.10.5'
+  testImplementation 'junit:junit:4.12'
+  testImplementation 'org.robolectric:robolectric:4.3.1'
+  testImplementation 'org.mockito:mockito-core:1.10.5'
 }
 //apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/installv1.gradle'
 //apply from: 'https://raw.githubusercontent.com/nuuneoi/JCenter/master/bintrayv1.gradle'
diff --git a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/ExpandableRecyclerViewAdapter.java b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/ExpandableRecyclerViewAdapter.java
index 8d7b40b..dcb3d5c 100644
--- a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/ExpandableRecyclerViewAdapter.java
+++ b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/ExpandableRecyclerViewAdapter.java
@@ -2,8 +2,8 @@
 
 import android.app.Activity;
 import android.os.Bundle;
-import android.support.v7.widget.RecyclerView;
-import android.support.v7.widget.RecyclerView.ViewHolder;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 import android.view.ViewGroup;
 import com.thoughtbot.expandablerecyclerview.listeners.ExpandCollapseListener;
 import com.thoughtbot.expandablerecyclerview.listeners.GroupExpandCollapseListener;
diff --git a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/MultiTypeExpandableRecyclerViewAdapter.java b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/MultiTypeExpandableRecyclerViewAdapter.java
index 3ba0312..1aed299 100644
--- a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/MultiTypeExpandableRecyclerViewAdapter.java
+++ b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/MultiTypeExpandableRecyclerViewAdapter.java
@@ -1,6 +1,6 @@
 package com.thoughtbot.expandablerecyclerview;
 
-import android.support.v7.widget.RecyclerView.ViewHolder;
+import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 import android.view.ViewGroup;
 import com.thoughtbot.expandablerecyclerview.models.ExpandableGroup;
 import com.thoughtbot.expandablerecyclerview.models.ExpandableList;
diff --git a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/listeners/OnGroupClickListener.java b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/listeners/OnGroupClickListener.java
index 8f64ec4..498c9f5 100644
--- a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/listeners/OnGroupClickListener.java
+++ b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/listeners/OnGroupClickListener.java
@@ -1,8 +1,5 @@
 package com.thoughtbot.expandablerecyclerview.listeners;
 
-import android.support.v7.widget.RecyclerView;
-import com.thoughtbot.expandablerecyclerview.viewholders.GroupViewHolder;
-
 public interface OnGroupClickListener {
 
   /**
diff --git a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/ChildViewHolder.java b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/ChildViewHolder.java
index 76bb550..2f33152 100644
--- a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/ChildViewHolder.java
+++ b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/ChildViewHolder.java
@@ -1,6 +1,6 @@
 package com.thoughtbot.expandablerecyclerview.viewholders;
 
-import android.support.v7.widget.RecyclerView;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import com.thoughtbot.expandablerecyclerview.models.ExpandableGroup;
 
diff --git a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/GroupViewHolder.java b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/GroupViewHolder.java
index 13b730a..e582da0 100644
--- a/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/GroupViewHolder.java
+++ b/expandablerecyclerview/src/main/java/com/thoughtbot/expandablerecyclerview/viewholders/GroupViewHolder.java
@@ -1,6 +1,6 @@
 package com.thoughtbot.expandablerecyclerview.viewholders;
 
-import android.support.v7.widget.RecyclerView;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.view.View.OnClickListener;
 import com.thoughtbot.expandablerecyclerview.listeners.OnGroupClickListener;
diff --git a/gradle.properties b/gradle.properties
index 1d3591c..915f0e6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,4 +15,6 @@
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
-# org.gradle.parallel=true
\ No newline at end of file
+# org.gradle.parallel=true
+android.enableJetifier=true
+android.useAndroidX=true
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 55d6c4f..b4c4e01 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Sep 28 11:33:07 EDT 2016
+#Fri Nov 01 15:10:22 IST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
diff --git a/sample/build.gradle b/sample/build.gradle
index 7575df3..7f76a9a 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -1,17 +1,16 @@
 apply plugin: 'com.android.application'
 
 android {
-  compileSdkVersion 23
-  buildToolsVersion "23.0.3"
+  compileSdkVersion 28
 
-  defaultConfig {
+    defaultConfig {
     applicationId "com.thoughtbot.expandablerecyclerview.sample"
     minSdkVersion 16
-    targetSdkVersion 23
+    targetSdkVersion 28
     versionCode 1
     versionName "1.0"
-
-    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    multiDexEnabled true
+    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
   }
   buildTypes {
     release {
@@ -22,27 +21,28 @@ android {
 }
 
 dependencies {
-  compile project(':expandablecheckrecyclerview')
+  implementation project(path: ':expandablerecyclerview')
 
   //android
-  compile 'com.android.support:appcompat-v7:23.4.0'
-  compile 'com.android.support:recyclerview-v7:23.4.0'
+  implementation 'androidx.appcompat:appcompat:1.1.0'
+  implementation 'androidx.recyclerview:recyclerview:1.0.0'
 
   //unit tests
-  testCompile 'junit:junit:4.12'
-  testCompile 'org.robolectric:robolectric:3.2.1'
-  testCompile 'org.mockito:mockito-core:1.10.5'
+  testImplementation 'junit:junit:4.12'
+  testImplementation 'org.robolectric:robolectric:4.3.1'
+  testImplementation 'org.mockito:mockito-core:1.10.5'
 
   //automation tests
-  androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
-  androidTestCompile 'com.android.support.test:runner:0.5'
-  androidTestCompile 'com.android.support:support-annotations:23.4.0'
-  androidTestCompile 'com.android.support.test:rules:0.4.1'
-  androidTestCompile('com.android.support.test.espresso:espresso-contrib:2.2') {
+  androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
+  androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+  androidTestImplementation 'androidx.annotation:annotation:1.0.0'
+  androidTestImplementation 'androidx.test:rules:1.1.1'
+  androidTestImplementation('androidx.test.espresso:espresso-contrib:3.1.0') {
     // Necessary to avoid version conflicts
     exclude group: 'com.android.support', module: 'appcompat'
     exclude group: 'com.android.support', module: 'support-v4'
     exclude group: 'com.android.support', module: 'support-annotations'
     exclude module: 'recyclerview-v7'
   }
+  implementation project(path: ':expandablecheckrecyclerview')
 }
diff --git a/sample/src/androidTest/java/com/thoughtbot/expandablerecyclerview/sample/ExpandActivityTest.java b/sample/src/androidTest/java/com/thoughtbot/expandablerecyclerview/sample/ExpandActivityTest.java
index 0fd0544..e812c28 100644
--- a/sample/src/androidTest/java/com/thoughtbot/expandablerecyclerview/sample/ExpandActivityTest.java
+++ b/sample/src/androidTest/java/com/thoughtbot/expandablerecyclerview/sample/ExpandActivityTest.java
@@ -1,9 +1,9 @@
 package com.thoughtbot.expandablerecyclerview.sample;
 
-import android.support.test.espresso.contrib.RecyclerViewActions;
-import android.support.test.rule.ActivityTestRule;
-import android.support.test.runner.AndroidJUnit4;
-import android.support.v7.widget.RecyclerView;
+import androidx.test.espresso.contrib.RecyclerViewActions;
+import androidx.test.rule.ActivityTestRule;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.recyclerview.widget.RecyclerView;
 import com.thoughtbot.expandablerecyclerview.sample.expand.GenreAdapter;
 import com.thoughtbot.expandablerecyclerview.sample.expand.ExpandActivity;
 import org.junit.Before;
@@ -11,9 +11,9 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static android.support.test.espresso.Espresso.onView;
-import static android.support.test.espresso.action.ViewActions.click;
-import static android.support.test.espresso.matcher.ViewMatchers.withId;
+import static androidx.test.espresso.Espresso.onView;
+import static androidx.test.espresso.action.ViewActions.click;
+import static androidx.test.espresso.matcher.ViewMatchers.withId;
 import static junit.framework.Assert.assertTrue;
 
 @RunWith(AndroidJUnit4.class)
diff --git a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/expand/ExpandActivity.java b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/expand/ExpandActivity.java
index 0eaca27..ae99fc0 100644
--- a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/expand/ExpandActivity.java
+++ b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/expand/ExpandActivity.java
@@ -1,11 +1,11 @@
 package com.thoughtbot.expandablerecyclerview.sample.expand;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.DefaultItemAnimator;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.DefaultItemAnimator;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
diff --git a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multicheck/MultiCheckActivity.java b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multicheck/MultiCheckActivity.java
index b31657b..bff7d84 100644
--- a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multicheck/MultiCheckActivity.java
+++ b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multicheck/MultiCheckActivity.java
@@ -1,10 +1,10 @@
 package com.thoughtbot.expandablerecyclerview.sample.multicheck;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
diff --git a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitype/MultiTypeActivity.java b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitype/MultiTypeActivity.java
index de3a1a5..2fc0b13 100644
--- a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitype/MultiTypeActivity.java
+++ b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitype/MultiTypeActivity.java
@@ -1,10 +1,10 @@
 package com.thoughtbot.expandablerecyclerview.sample.multitype;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import com.thoughtbot.expandablerecyclerview.sample.R;
 
 import static com.thoughtbot.expandablerecyclerview.sample.GenreDataFactory.makeGenres;
diff --git a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitypeandcheck/MultiTypeCheckGenreActivity.java b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitypeandcheck/MultiTypeCheckGenreActivity.java
index 87223fd..fe4e8fe 100644
--- a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitypeandcheck/MultiTypeCheckGenreActivity.java
+++ b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/multitypeandcheck/MultiTypeCheckGenreActivity.java
@@ -1,10 +1,10 @@
 package com.thoughtbot.expandablerecyclerview.sample.multitypeandcheck;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
diff --git a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/singlecheck/SingleCheckActivity.java b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/singlecheck/SingleCheckActivity.java
index 4207d26..3ad58c9 100644
--- a/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/singlecheck/SingleCheckActivity.java
+++ b/sample/src/main/java/com/thoughtbot/expandablerecyclerview/sample/singlecheck/SingleCheckActivity.java
@@ -1,10 +1,10 @@
 package com.thoughtbot.expandablerecyclerview.sample.singlecheck;
 
 import android.os.Bundle;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
diff --git a/sample/src/main/res/layout/activity_expand.xml b/sample/src/main/res/layout/activity_expand.xml
index ecc32f3..796b796 100644
--- a/sample/src/main/res/layout/activity_expand.xml
+++ b/sample/src/main/res/layout/activity_expand.xml
@@ -10,7 +10,7 @@
     android:layout_height="wrap_content"
     android:text="Toggle Classic Group" />
 
-  <android.support.v7.widget.RecyclerView
+  <androidx.recyclerview.widget.RecyclerView
     android:id="@+id/recycler_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
diff --git a/sample/src/main/res/layout/activity_multi_check.xml b/sample/src/main/res/layout/activity_multi_check.xml
index 59f19f8..62abf63 100644
--- a/sample/src/main/res/layout/activity_multi_check.xml
+++ b/sample/src/main/res/layout/activity_multi_check.xml
@@ -17,7 +17,7 @@
     android:layout_below="@id/clear_button"
     android:text="programmatically check 'Boston'" />
 
-  <android.support.v7.widget.RecyclerView
+  <androidx.recyclerview.widget.RecyclerView
     android:id="@+id/recycler_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
diff --git a/sample/src/main/res/layout/activity_multi_type.xml b/sample/src/main/res/layout/activity_multi_type.xml
index 0021da6..c59294b 100644
--- a/sample/src/main/res/layout/activity_multi_type.xml
+++ b/sample/src/main/res/layout/activity_multi_type.xml
@@ -4,7 +4,7 @@
   android:layout_height="match_parent"
   android:orientation="vertical">
 
-  <android.support.v7.widget.RecyclerView
+  <androidx.recyclerview.widget.RecyclerView
     android:id="@+id/recycler_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent" />
diff --git a/sample/src/main/res/layout/activity_multi_type_and_check.xml b/sample/src/main/res/layout/activity_multi_type_and_check.xml
index 2a5380f..2381474 100644
--- a/sample/src/main/res/layout/activity_multi_type_and_check.xml
+++ b/sample/src/main/res/layout/activity_multi_type_and_check.xml
@@ -11,7 +11,7 @@
     android:text="clear selections" />
 
 
-  <android.support.v7.widget.RecyclerView
+  <androidx.recyclerview.widget.RecyclerView
     android:id="@+id/recycler_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
diff --git a/sample/src/main/res/layout/activity_single_check.xml b/sample/src/main/res/layout/activity_single_check.xml
index 2a5380f..2381474 100644
--- a/sample/src/main/res/layout/activity_single_check.xml
+++ b/sample/src/main/res/layout/activity_single_check.xml
@@ -11,7 +11,7 @@
     android:text="clear selections" />
 
 
-  <android.support.v7.widget.RecyclerView
+  <androidx.recyclerview.widget.RecyclerView
     android:id="@+id/recycler_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
diff --git a/sample/src/test/java/com/thoughtbot/expandablerecyclerview/sample/GenreAdapterTest.java b/sample/src/test/java/com/thoughtbot/expandablerecyclerview/sample/GenreAdapterTest.java
index 2f3f85a..6d35b8b 100644
--- a/sample/src/test/java/com/thoughtbot/expandablerecyclerview/sample/GenreAdapterTest.java
+++ b/sample/src/test/java/com/thoughtbot/expandablerecyclerview/sample/GenreAdapterTest.java
@@ -2,7 +2,7 @@
 
 import android.app.Application;
 import android.content.Context;
-import android.support.v7.widget.RecyclerView.ViewHolder;
+import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 import android.widget.LinearLayout;
 import com.thoughtbot.expandablerecyclerview.models.ExpandableListPosition;
 import com.thoughtbot.expandablerecyclerview.sample.expand.ArtistViewHolder;