diff --git a/app/build.gradle b/app/build.gradle
index 266181c..b2d6ace 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -28,8 +28,8 @@ android {
         applicationId "com.starry.myne"
         minSdk 26
         targetSdk 35
-        versionCode 391
-        versionName "3.9.1"
+        versionCode 400
+        versionName "4.0.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
diff --git a/fastlane/metadata/android/en-US/changelogs/400.txt b/fastlane/metadata/android/en-US/changelogs/400.txt
new file mode 100644
index 0000000..5d4ccca
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/400.txt
@@ -0,0 +1,4 @@
+- Bumped target SDK to v35 (Android 15).
+- Added handling for OPF prefix in the manifest tags in the EPUB parser.
+- Added Hindi translations.
+- Some documentation updates and other minor fixes.
\ No newline at end of file