diff --git a/build.gradle b/build.gradle
index ea8f01a..4f0a511 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,17 +1,19 @@
 buildscript {
     repositories {
-        jcenter()
+        gradlePluginPortal()
         google()
+        mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.4'
+        classpath 'com.android.tools.build:gradle:7.3.1'
     }
 }
 
 allprojects {
     repositories {
-        jcenter()
+        gradlePluginPortal()
         google()
+        mavenCentral()
     }
 }
 
diff --git a/caster/build.gradle b/caster/build.gradle
index 91922a6..357b9f5 100644
--- a/caster/build.gradle
+++ b/caster/build.gradle
@@ -1,21 +1,17 @@
 apply plugin: 'com.android.library'
 
 ext {
-    supportVersion = '27.1.1'
-    castVersion = '15.0.1'
-    queryVersion = '0.25.9'
+    castVersion = '21.2.0'
 }
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    namespace 'com.mradzinski.caster'
+    compileSdkVersion 33
 
     defaultConfig {
         minSdkVersion 17
-        targetSdkVersion 27
-        versionCode 7
-        versionName '1.0.8'
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        targetSdkVersion 33
+        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
     buildTypes {
@@ -26,21 +22,9 @@ android {
     }
 }
 
-configurations.all {
-    // Force the usage of the same support library version.
-    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
-        def requested = details.requested
-        if (requested.group == 'com.android.support') {
-            if (!requested.name.startsWith("multidex")) {
-                details.useVersion supportVersion
-            }
-        }
-    }
-}
-
 dependencies {
-    api "com.android.support:appcompat-v7:$supportVersion"
-    api "com.android.support:support-v4:$supportVersion"
-    api "com.android.support:mediarouter-v7:$supportVersion"
+    api 'androidx.appcompat:appcompat:1.5.1'
+    api 'androidx.legacy:legacy-support-v4:1.0.0'
+    api 'androidx.mediarouter:mediarouter:1.3.1'
     api "com.google.android.gms:play-services-cast-framework:$castVersion"
 }
\ No newline at end of file
diff --git a/caster/src/main/AndroidManifest.xml b/caster/src/main/AndroidManifest.xml
index 1692838..eec70a8 100644
--- a/caster/src/main/AndroidManifest.xml
+++ b/caster/src/main/AndroidManifest.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest package="com.mradzinski.caster"
-          xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
         android:label="@string/app_name"
diff --git a/caster/src/main/java/com/mradzinski/caster/CastOptionsProvider.java b/caster/src/main/java/com/mradzinski/caster/CastOptionsProvider.java
index d25d4e1..93d2234 100644
--- a/caster/src/main/java/com/mradzinski/caster/CastOptionsProvider.java
+++ b/caster/src/main/java/com/mradzinski/caster/CastOptionsProvider.java
@@ -12,13 +12,16 @@
 import java.util.Arrays;
 import java.util.List;
 
+import androidx.annotation.NonNull;
+
 @SuppressWarnings("unused")
 // Class is used and being referenced in the AndroidManifest.xml as value for
 // com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME
 public class CastOptionsProvider implements OptionsProvider {
 
+    @NonNull
     @Override
-    public CastOptions getCastOptions(Context context) {
+    public CastOptions getCastOptions(@NonNull Context context) {
         CastOptions customCastOptions = Caster.customCastOptions;
         LaunchOptions customLaunchOptions = Caster.customLaunchOptions;
 
@@ -56,7 +59,7 @@ private List<String> createButtonActions() {
     }
 
     @Override
-    public List<SessionProvider> getAdditionalSessionProviders(Context context) {
+    public List<SessionProvider> getAdditionalSessionProviders(@NonNull Context context) {
         return null;
     }
 }
diff --git a/caster/src/main/java/com/mradzinski/caster/Caster.java b/caster/src/main/java/com/mradzinski/caster/Caster.java
index 767746e..df63b06 100644
--- a/caster/src/main/java/com/mradzinski/caster/Caster.java
+++ b/caster/src/main/java/com/mradzinski/caster/Caster.java
@@ -4,11 +4,6 @@
 import android.app.Application;
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.LayoutRes;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.annotation.UiThread;
-import android.support.v7.app.MediaRouteButton;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -35,6 +30,12 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import androidx.annotation.LayoutRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.UiThread;
+import androidx.mediarouter.app.MediaRouteButton;
+
 /**
  * Core class of Caster. It manages buttons/widgets and gives access to the media player.
  */
diff --git a/caster/src/main/java/com/mradzinski/caster/CasterActivity.java b/caster/src/main/java/com/mradzinski/caster/CasterActivity.java
index 5f85da9..7274b57 100644
--- a/caster/src/main/java/com/mradzinski/caster/CasterActivity.java
+++ b/caster/src/main/java/com/mradzinski/caster/CasterActivity.java
@@ -1,12 +1,13 @@
 package com.mradzinski.caster;
 
 import android.os.Bundle;
-import android.support.annotation.CallSuper;
-import android.support.annotation.IdRes;
-import android.support.annotation.Nullable;
-import android.support.v7.app.AppCompatActivity;
 import android.view.Menu;
 
+import androidx.annotation.CallSuper;
+import androidx.annotation.IdRes;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
 /**
  * Extensible {@link AppCompatActivity}, which helps with setting widgets
  */
diff --git a/caster/src/main/java/com/mradzinski/caster/CasterNoOp.java b/caster/src/main/java/com/mradzinski/caster/CasterNoOp.java
index 7a03ede..7a50df1 100644
--- a/caster/src/main/java/com/mradzinski/caster/CasterNoOp.java
+++ b/caster/src/main/java/com/mradzinski/caster/CasterNoOp.java
@@ -1,10 +1,11 @@
 package com.mradzinski.caster;
 
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.v7.app.MediaRouteButton;
 import android.view.Menu;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.mediarouter.app.MediaRouteButton;
+
 class CasterNoOp extends Caster {
     private CasterPlayer casterPlayer;
 
diff --git a/caster/src/main/java/com/mradzinski/caster/CasterPlayer.java b/caster/src/main/java/com/mradzinski/caster/CasterPlayer.java
index 83fa0a9..589cc71 100644
--- a/caster/src/main/java/com/mradzinski/caster/CasterPlayer.java
+++ b/caster/src/main/java/com/mradzinski/caster/CasterPlayer.java
@@ -1,14 +1,16 @@
 package com.mradzinski.caster;
 
-import android.support.annotation.MainThread;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
 import android.util.Log;
 
 import com.google.android.gms.cast.MediaInfo;
 import com.google.android.gms.cast.MediaLoadOptions;
 import com.google.android.gms.cast.framework.media.RemoteMediaClient;
 
+import androidx.annotation.MainThread;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+@SuppressWarnings("unused")
 public class CasterPlayer {
     private static final String TAG = "Caster";
 
diff --git a/caster/src/main/java/com/mradzinski/caster/CasterPlayerNoOp.java b/caster/src/main/java/com/mradzinski/caster/CasterPlayerNoOp.java
index 567e362..881f001 100644
--- a/caster/src/main/java/com/mradzinski/caster/CasterPlayerNoOp.java
+++ b/caster/src/main/java/com/mradzinski/caster/CasterPlayerNoOp.java
@@ -1,8 +1,9 @@
 package com.mradzinski.caster;
 
-import android.support.annotation.NonNull;
 import com.google.android.gms.cast.MediaInfo;
 
+import androidx.annotation.NonNull;
+
 class CasterPlayerNoOp extends CasterPlayer {
     @Override
     public void play() {
diff --git a/caster/src/main/java/com/mradzinski/caster/ExpandedControlsStyle.java b/caster/src/main/java/com/mradzinski/caster/ExpandedControlsStyle.java
index 2f84bcd..e25b820 100644
--- a/caster/src/main/java/com/mradzinski/caster/ExpandedControlsStyle.java
+++ b/caster/src/main/java/com/mradzinski/caster/ExpandedControlsStyle.java
@@ -10,10 +10,10 @@
 
 package com.mradzinski.caster;
 
-import android.support.annotation.ColorInt;
-
 import java.io.Serializable;
 
+import androidx.annotation.ColorInt;
+
 public class ExpandedControlsStyle implements Serializable {
     @ColorInt private int seekbarLineColor;
     @ColorInt private int seekbarThumbColor;
diff --git a/caster/src/main/java/com/mradzinski/caster/MediaData.java b/caster/src/main/java/com/mradzinski/caster/MediaData.java
index 4dda68a..e0f904f 100644
--- a/caster/src/main/java/com/mradzinski/caster/MediaData.java
+++ b/caster/src/main/java/com/mradzinski/caster/MediaData.java
@@ -1,16 +1,19 @@
 package com.mradzinski.caster;
 
 import android.net.Uri;
-import android.support.annotation.IntDef;
 import android.text.TextUtils;
+
 import com.google.android.gms.cast.MediaInfo;
 import com.google.android.gms.cast.MediaMetadata;
 import com.google.android.gms.common.images.WebImage;
+
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
 import java.util.List;
 
+import androidx.annotation.IntDef;
+
 /**
  * Media information class
  */
diff --git a/caster/src/main/res/menu/caster_discovery.xml b/caster/src/main/res/menu/caster_discovery.xml
index a6ae726..d138be4 100644
--- a/caster/src/main/res/menu/caster_discovery.xml
+++ b/caster/src/main/res/menu/caster_discovery.xml
@@ -4,6 +4,6 @@
     <item
         android:id="@+id/caster_media_route_menu_item"
         android:title="@android:string/untitled"
-        app:actionProviderClass="android.support.v7.app.MediaRouteActionProvider"
+        app:actionProviderClass="androidx.mediarouter.app.MediaRouteActionProvider"
         app:showAsAction="always" />
 </menu>
\ No newline at end of file
diff --git a/example/build.gradle b/example/build.gradle
index e422f0a..0ab87a4 100644
--- a/example/build.gradle
+++ b/example/build.gradle
@@ -1,16 +1,16 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    namespace 'com.mradzinski.casterexample'
+    compileSdkVersion 33
 
     defaultConfig {
         applicationId "com.mradzinski.casterexample"
         minSdkVersion 17
-        targetSdkVersion 27
+        targetSdkVersion 33
         versionCode 1
         versionName "1.0.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
     buildTypes {
         release {
diff --git a/example/src/main/AndroidManifest.xml b/example/src/main/AndroidManifest.xml
index 726a2c6..af9e3f7 100644
--- a/example/src/main/AndroidManifest.xml
+++ b/example/src/main/AndroidManifest.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.mradzinski.casterexample">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.INTERNET" />
 
@@ -12,7 +11,9 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name="com.mradzinski.casterexample.MainActivity">
+        <activity
+            android:name="com.mradzinski.casterexample.MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
diff --git a/example/src/main/java/com/mradzinski/casterexample/MainActivity.java b/example/src/main/java/com/mradzinski/casterexample/MainActivity.java
index ff7f957..83ef8cd 100644
--- a/example/src/main/java/com/mradzinski/casterexample/MainActivity.java
+++ b/example/src/main/java/com/mradzinski/casterexample/MainActivity.java
@@ -1,17 +1,17 @@
 package com.mradzinski.casterexample;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.app.MediaRouteButton;
 import android.util.Log;
 import android.view.Menu;
-import android.view.View;
 import android.widget.Button;
 
 import com.mradzinski.caster.Caster;
 import com.mradzinski.caster.ExpandedControlsStyle;
 import com.mradzinski.caster.MediaData;
 
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.mediarouter.app.MediaRouteButton;
+
 public class MainActivity extends AppCompatActivity {
     private static final String VIMEO_URL = "Your M3U URL goes here :)";
 
@@ -43,19 +43,11 @@ private void setUpPlayButton() {
         playButton = findViewById(R.id.button_play);
         resumeButton = findViewById(R.id.button_resume);
 
-        playButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                caster.getPlayer().loadMediaAndPlay(createSampleMediaData());
-            }
-        });
+        playButton.setOnClickListener(v -> caster.getPlayer().loadMediaAndPlay(createSampleMediaData()));
 
-        resumeButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (caster.getPlayer().isPaused()) {
-                    caster.getPlayer().togglePlayPause();
-                }
+        resumeButton.setOnClickListener(v -> {
+            if (caster.getPlayer().isPaused()) {
+                caster.getPlayer().togglePlayPause();
             }
         });
 
diff --git a/gradle.properties b/gradle.properties
index aac7c9b..9e6fce1 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,6 +9,8 @@
 
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
+android.enableJetifier=true
+android.useAndroidX=true
 org.gradle.jvmargs=-Xmx1536m
 
 # When configured, Gradle will run in incubating parallel mode.
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 13372ae..758de96 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index bc47b4a..8fad3f5 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Feb 14 11:27:03 CET 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.5.1-all.zip
diff --git a/gradlew b/gradlew
index 9d82f78..cccdd3d 100755
--- a/gradlew
+++ b/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,26 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -85,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -150,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
index 8a0b282..f955316 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
 set DIRNAME=%~dp0
 if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 
@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail
 
 :init
-@rem Get command-line arguments, handling Windowz variants
+@rem Get command-line arguments, handling Windows variants
 
 if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
 
 :win9xME_args
 @rem Slurp the command line arguments.
@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute
 
 set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
 
 :execute
 @rem Setup the command line