diff --git a/app/build.gradle b/app/build.gradle
index afcae1aab..d05b9dfe2 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -16,8 +16,8 @@ android {
 		applicationId 'org.koitharu.kotatsu'
 		minSdk = 21
 		targetSdk = 34
-		versionCode = 596
-		versionName = '6.3.0-a1'
+		versionCode = 597
+		versionName = '6.3.0'
 		generatedDensities = []
 		testInstrumentationRunner "org.koitharu.kotatsu.HiltTestRunner"
 		ksp {
@@ -33,7 +33,6 @@ android {
 			applicationIdSuffix = '.debug'
 		}
 		release {
-			multiDexEnabled false
 			minifyEnabled true
 			shrinkResources true
 			proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
@@ -82,7 +81,7 @@ afterEvaluate {
 }
 dependencies {
 	//noinspection GradleDependency
-	implementation('com.github.KotatsuApp:kotatsu-parsers:2cd2d7dbc4') {
+	implementation('com.github.KotatsuApp:kotatsu-parsers:43fd7b8d47') {
 		exclude group: 'org.json', module: 'json'
 	}
 
@@ -91,7 +90,7 @@ dependencies {
 
 	implementation 'androidx.appcompat:appcompat:1.6.1'
 	implementation 'androidx.core:core-ktx:1.12.0'
-	implementation 'androidx.activity:activity-ktx:1.8.0'
+	implementation 'androidx.activity:activity-ktx:1.8.1'
 	implementation 'androidx.fragment:fragment-ktx:1.6.2'
 	implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.2'
 	implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.6.2'
diff --git a/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderActivity.kt b/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderActivity.kt
index bd6b4a039..bee4837b6 100644
--- a/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderActivity.kt
+++ b/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderActivity.kt
@@ -307,15 +307,13 @@ class ReaderActivity :
 	private fun onPageSaved(uri: Uri?) {
 		if (uri != null) {
 			Snackbar.make(viewBinding.container, R.string.page_saved, Snackbar.LENGTH_LONG)
-				.setAnchorView(viewBinding.appbarBottom)
 				.setAction(R.string.share) {
 					ShareHelper(this).shareImage(uri)
-				}.show()
+				}
 		} else {
 			Snackbar.make(viewBinding.container, R.string.error_occurred, Snackbar.LENGTH_SHORT)
-				.setAnchorView(viewBinding.appbarBottom)
-				.show()
-		}
+		}.setAnchorView(viewBinding.appbarBottom)
+			.show()
 	}
 
 	private fun setWindowSecure(isSecure: Boolean) {
diff --git a/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderViewModel.kt b/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderViewModel.kt
index 109b2d125..f0cea3488 100644
--- a/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderViewModel.kt
+++ b/app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderViewModel.kt
@@ -27,6 +27,7 @@ import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.plus
+import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.bookmarks.domain.Bookmark
 import org.koitharu.kotatsu.bookmarks.domain.BookmarksRepository
@@ -255,10 +256,13 @@ class ReaderViewModel @Inject constructor(
 	@MainThread
 	fun onCurrentPageChanged(position: Int) {
 		val prevJob = stateChangeJob
+		val pages = content.value.pages // capture immediately
 		stateChangeJob = launchJob(Dispatchers.Default) {
 			prevJob?.cancelAndJoin()
 			loadingJob?.join()
-			val pages = content.value.pages
+			if (BuildConfig.DEBUG && pages.size != content.value.pages.size) {
+				throw IllegalStateException("Concurrent pages modification")
+			}
 			pages.getOrNull(position)?.let { page ->
 				currentState.update { cs ->
 					cs?.copy(chapterId = page.chapterId, page = page.index)
diff --git a/build.gradle b/build.gradle
index 0b500dad3..021ba8feb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ buildscript {
 		mavenCentral()
 	}
 	dependencies {
-		classpath 'com.android.tools.build:gradle:8.1.3'
+		classpath 'com.android.tools.build:gradle:8.1.4'
 		classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.20'
 		classpath 'com.google.dagger:hilt-android-gradle-plugin:2.48.1'
 		classpath 'com.google.devtools.ksp:symbol-processing-gradle-plugin:1.9.20-1.0.14'