diff --git a/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/README.md b/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/README.md
index d776f9b..60ab393 100644
--- a/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/README.md
+++ b/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/README.md
@@ -1,10 +1,10 @@
 #### origin for pre-built native extension binaries:
 
-* [Just Player](https://github.com/moneytoo/Player/tree/v0.118/app/libs)
-  - release: [v0.118](https://github.com/moneytoo/Player/releases/tag/v0.118) (using [ExoPlayer 2.18.0](https://github.com/google/ExoPlayer/releases/tag/r2.18.0))
+* [Just Player](https://github.com/moneytoo/Player/tree/v0.123/app/libs)
+  - release: [v0.123](https://github.com/moneytoo/Player/releases/tag/v0.123) (using [ExoPlayer 2.18.1](https://github.com/google/ExoPlayer/releases/tag/r2.18.1))
   - extensions:
-    * [_av1_](https://github.com/moneytoo/Player/raw/v0.118/app/libs/extension-av1-release.aar)
-    * [_ffmpeg_](https://github.com/moneytoo/Player/raw/v0.118/app/libs/extension-ffmpeg-release.aar)
+    * [_av1_](https://github.com/moneytoo/Player/raw/v0.123/app/libs/extension-av1-release.aar)
+    * [_ffmpeg_](https://github.com/moneytoo/Player/raw/v0.123/app/libs/extension-ffmpeg-release.aar)
   - ABIs:
     * armeabi-v7a
     * arm64-v8a
diff --git a/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/extension-av1.aar b/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/extension-av1.aar
index 10d7596..bb3b37d 100644
Binary files a/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/extension-av1.aar and b/android-studio-project/ExoPlayer-AirPlay-Receiver/libs/decoder_extensions/extension-av1.aar differ
diff --git a/android-studio-project/constants.gradle b/android-studio-project/constants.gradle
index f42dbd4..e73875b 100644
--- a/android-studio-project/constants.gradle
+++ b/android-studio-project/constants.gradle
@@ -1,6 +1,6 @@
 project.ext {
-    releaseVersionCode  = Integer.parseInt("002004716", 10)  //Integer.MAX_VALUE == 2147483647
-    releaseVersion      = '002.00.47-16API'
+    releaseVersionCode  = Integer.parseInt("002004816", 10)  //Integer.MAX_VALUE == 2147483647
+    releaseVersion      = '002.00.48-16API'
     javaVersion         = JavaVersion.VERSION_1_8
     minSdkVersion       = 16
     targetSdkVersion    = 29
@@ -10,10 +10,10 @@ project.ext {
     libVersionDdPlist   = '1.23'
     libVersionHttpCore  = '4.4.13'
     libVersionJmDNS     = '3.5.8'
-    libVersionExoPlayer = '2.18.0'
+    libVersionExoPlayer = '2.18.1'
 
     // keep versions of AndroidX libraries in sync with those used by ExoPlayer:
-    //   https://github.com/google/ExoPlayer/blob/r2.18.0/constants.gradle#L37
+    //   https://github.com/google/ExoPlayer/blob/r2.18.1/constants.gradle#L37
 
     libVersionAndroidxAnnotation = '1.3.0'
     libVersionAndroidxAppCompat  = '1.3.1'