diff --git a/README.en.md b/README.en.md
index a735c58..6179280 100644
--- a/README.en.md
+++ b/README.en.md
@@ -68,7 +68,7 @@ only if installing Shizuku using ADB
 ### Install Pixel IMS application
 1. As for now, there are two ways to obtain the application. Choose you favourite way and install the application.
    - Via [Play Store](https://play.google.com/store/apps/details?id=dev.bluehouse.enablevolte)
-   - From [Github Releases](https://github.com/kyujin-cho/pixel-volte-patch/releases/download/1.2.7/dev.bluehouse.enablevolte.apk), by downloading APK file
+   - From [Github Releases](https://github.com/kyujin-cho/pixel-volte-patch/releases/download/1.2.8/dev.bluehouse.enablevolte.apk), by downloading APK file
 2. Start installed application.
 3. Tap "Allow all the time" when seeing prompt asking for Shizuku permission.
    ![image-5](https://github.com/kyujin-cho/pixel-volte-patch/raw/main/assets/Screenshot_20230208-235239.png)
diff --git a/README.md b/README.md
index 0b054f5..d7cb69a 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ English version available [here](https://github.com/kyujin-cho/pixel-volte-patch
 ### Pixel IMS 어플리케이션 설치
 
 1. 현재 다음 두 가지 방법으로 Pixel IMS 앱을 설치할 수 있습니다.
-   - [Github Releases](https://github.com/kyujin-cho/pixel-volte-patch/releases/download/1.2.7/dev.bluehouse.enablevolte.apk) 에서 APK 다운로드 후 설치
+   - [Github Releases](https://github.com/kyujin-cho/pixel-volte-patch/releases/download/1.2.8/dev.bluehouse.enablevolte.apk) 에서 APK 다운로드 후 설치
    - [Play Store](https://play.google.com/store/apps/details?id=dev.bluehouse.enablevolte) 에서 다운로드
 2. 설치한 어플리케이션을 실행합니다.
 3. 다음과 같이 Shizuku 권한을 묻는 팝업 창이 뜰 경우 "모든 경우에 허용" 을 선택합니다.
diff --git a/app/build.gradle b/app/build.gradle
index 8ab5374..c8b229a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,8 +11,8 @@ android {
         applicationId "dev.bluehouse.enablevolte"
         minSdk 29
         targetSdk 33
-        versionCode 12
-        versionName "1.2.7"
+        versionCode 13
+        versionName "1.2.8"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {