diff --git a/app/build.gradle b/app/build.gradle
index e60d74bdd2..c08833a609 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -266,8 +266,7 @@ dependencies {
     implementation "io.github.reactivecircus.flowbinding:flowbinding-viewpager:$flowbinding_version"
 
     // Licenses
-    // NOTE: REMEMBER TO UPDATE GRADLE PLUGIN
-    implementation 'com.mikepenz:aboutlibraries:8.4.2'
+    implementation "com.mikepenz:aboutlibraries:$BuildPluginsVersion.ABOUTLIB_PLUGIN"
 
     // Tests
     testImplementation 'junit:junit:4.13'
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupManager.kt b/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupManager.kt
index f211b7038c..1e65fe4cbd 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupManager.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupManager.kt
@@ -41,8 +41,8 @@ abstract class AbstractBackupManager(protected val context: Context) {
     internal fun restoreChapterFetchObservable(source: Source, manga: Manga, chapters: List<Chapter>): Observable<Pair<List<Chapter>, List<Chapter>>> {
         return source.fetchChapterList(manga)
             .map { syncChaptersWithSource(databaseHelper, it, manga, source) }
-            .doOnNext { pair ->
-                if (pair.first.isNotEmpty()) {
+            .doOnNext { (first) ->
+                if (first.isNotEmpty()) {
                     chapters.forEach { it.manga_id = manga.id }
                     updateChapters(chapters)
                 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupRestore.kt b/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupRestore.kt
index 19e41c429a..9a0926e3b3 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupRestore.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/backup/AbstractBackupRestore.kt
@@ -11,7 +11,6 @@ import eu.kanade.tachiyomi.data.track.TrackManager
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.util.chapter.NoChaptersException
 import kotlinx.coroutines.Job
-import okio.source
 import rx.Observable
 import uy.kohesive.injekt.injectLazy
 import java.io.File
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt
index edf719e74a..891e5d2863 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt
@@ -128,7 +128,7 @@ class DownloadCache(
             .orEmpty()
             .associate { it.name to SourceDirectory(it) }
             .mapNotNullKeys { entry ->
-                onlineSources.find { provider.getSourceDirName(it).toLowerCase() == entry.key?.toLowerCase() }?.id
+                onlineSources.find { provider.getSourceDirName(it).equals(entry.key, ignoreCase = true) }?.id
             }
 
         rootDir.files = sourceDirs
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadPendingDeleter.kt b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadPendingDeleter.kt
index f9ff46b5f2..d42fe982a5 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadPendingDeleter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadPendingDeleter.kt
@@ -89,8 +89,8 @@ class DownloadPendingDeleter(context: Context) {
         }
         lastAddedEntry = null
 
-        return entries.associate { entry ->
-            entry.manga.toModel() to entry.chapters.map { it.toModel() }
+        return entries.associate { (chapters, manga) ->
+            manga.toModel() to chapters.map { it.toModel() }
         }
     }
 
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt b/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt
index 697d76b3f7..26fb7e6e1a 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt
@@ -165,8 +165,7 @@ class LibraryUpdateNotifier(private val context: Context) {
 
             // Per-manga notification
             if (!preferences.hideNotificationContent()) {
-                updates.forEach {
-                    val (manga, chapters) = it
+                updates.forEach { (manga, chapters) ->
                     notify(manga.id.hashCode(), createNewChaptersNotification(manga, chapters))
                 }
             }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt b/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt
index 4884f87c0a..ca411c6fc1 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt
@@ -275,7 +275,7 @@ class LibraryUpdateService(
                         Pair(emptyList(), emptyList())
                     }
                     // Filter out mangas without new chapters (or failed).
-                    .filter { pair -> pair.first.isNotEmpty() }
+                    .filter { (first) -> first.isNotEmpty() }
                     .doOnNext {
                         if (manga.shouldDownloadNewChapters(db, preferences)) {
                             downloadChapters(manga, it.first)
@@ -317,7 +317,7 @@ class LibraryUpdateService(
                     )
                 }
             }
-            .map { manga -> manga.first }
+            .map { (first) -> first }
     }
 
     private fun downloadChapters(manga: Manga, chapters: List<Chapter>) {
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeList.kt b/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeList.kt
index a87bb61cef..5aaf8c065b 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeList.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/track/myanimelist/MyAnimeList.kt
@@ -149,13 +149,9 @@ class MyAnimeList(private val context: Context, id: Int) : TrackService(id) {
     private fun saveCSRF(csrf: String) = preferences.trackToken(this).set(csrf)
 
     private fun checkCookies(): Boolean {
-        var ckCount = 0
         val url = BASE_URL.toHttpUrlOrNull()!!
-        for (ck in networkService.cookieManager.get(url)) {
-            if (ck.name == USER_SESSION_COOKIE || ck.name == LOGGED_IN_COOKIE) {
-                ckCount++
-            }
-        }
+        val ckCount = networkService.cookieManager.get(url).count {
+            it.name == USER_SESSION_COOKIE || it.name == LOGGED_IN_COOKIE }
 
         return ckCount == 2
     }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt b/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt
index 941c6e6e24..6268b2f053 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt
@@ -1,8 +1,6 @@
 package eu.kanade.tachiyomi.extension.api
 
 import android.content.Context
-import com.github.salomonbrys.kotson.get
-import com.github.salomonbrys.kotson.int
 import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.extension.model.Extension
 import eu.kanade.tachiyomi.extension.model.LoadResult
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/ExtensionController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/ExtensionController.kt
index 7fe30b04f4..2b86eb8319 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/ExtensionController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/ExtensionController.kt
@@ -185,7 +185,7 @@ open class ExtensionController :
     }
 
     private fun drawExtensions() {
-        if (!query.isBlank()) {
+        if (query.isNotBlank()) {
             adapter?.updateDataSet(
                 extensions.filter {
                     it.extension.name.contains(query, ignoreCase = true)
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/ExtensionDetailsPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/ExtensionDetailsPresenter.kt
index e43ea629d6..149de4b119 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/ExtensionDetailsPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/details/ExtensionDetailsPresenter.kt
@@ -24,7 +24,7 @@ class ExtensionDetailsPresenter(
         extensionManager.getInstalledExtensionsObservable()
             .skip(1)
             .filter { extensions -> extensions.none { it.pkgName == pkgName } }
-            .map { Unit }
+            .map { }
             .take(1)
             .observeOn(AndroidSchedulers.mainThread())
             .subscribeFirst({ view, _ ->
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/search/SearchPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/search/SearchPresenter.kt
index 277ec75294..bd8e4aa848 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/search/SearchPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/search/SearchPresenter.kt
@@ -97,7 +97,7 @@ class SearchPresenter(
                 val prevMangaChapters = db.getChapters(prevManga).executeAsBlocking()
                 val maxChapterRead = prevMangaChapters
                     .filter { it.read }
-                    .maxBy { it.chapter_number }?.chapter_number
+                    .maxByOrNull { it.chapter_number }?.chapter_number
                 val bookmarkedChapters = prevMangaChapters
                     .filter { it.bookmark && it.isRecognizedNumber }
                     .map { it.chapter_number }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesPresenter.kt
index 72a3a25264..61181ba2ed 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesPresenter.kt
@@ -27,9 +27,9 @@ class MigrationSourcesPresenter(
 
     private fun findSourcesWithManga(library: List<Manga>): List<SourceItem> {
         val header = SelectionHeader()
-        return library.map { it.source }.toSet()
+        return library.asSequence().map { it.source }.toSet()
             .mapNotNull { if (it != LocalSource.ID) sourceManager.getOrStub(it) else null }
             .sortedBy { it.name.toLowerCase() }
-            .map { SourceItem(it, header) }
+            .map { SourceItem(it, header) }.toList()
     }
 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/SourcePresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/SourcePresenter.kt
index eeee195c5a..a51deafb5d 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/SourcePresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/SourcePresenter.kt
@@ -13,7 +13,6 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.drop
 import kotlinx.coroutines.flow.launchIn
-import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.onStart
 import rx.Observable
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
index 330c81ffee..d2ab129c2c 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
@@ -264,7 +264,7 @@ open class BrowseSourceController(bundle: Bundle) :
         searchView.maxWidth = Int.MAX_VALUE
 
         val query = presenter.query
-        if (!query.isBlank()) {
+        if (query.isNotBlank()) {
             searchItem.expandActionView()
             searchView.setQuery(query, true)
             searchView.clearFocus()
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourcePresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourcePresenter.kt
index 840aae6fc5..e2de202315 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourcePresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourcePresenter.kt
@@ -52,7 +52,7 @@ import java.util.Date
  */
 open class BrowseSourcePresenter(
     private val sourceId: Long,
-    private val searchQuery: String? = null,
+    searchQuery: String? = null,
     private val sourceManager: SourceManager = Injekt.get(),
     private val db: DatabaseHelper = Injekt.get(),
     private val prefs: PreferencesHelper = Injekt.get(),
@@ -153,9 +153,9 @@ open class BrowseSourcePresenter(
         pagerSubscription?.let { remove(it) }
         pagerSubscription = pager.results()
             .observeOn(Schedulers.io())
-            .map { pair -> pair.first to pair.second.map { networkToLocalManga(it, sourceId) } }
+            .map { (first, second) -> first to second.map { networkToLocalManga(it, sourceId) } }
             .doOnNext { initializeMangas(it.second) }
-            .map { pair -> pair.first to pair.second.map { SourceItem(it, sourceDisplayMode) } }
+            .map { (first, second) -> first to second.map { SourceItem(it, sourceDisplayMode) } }
             .observeOn(AndroidSchedulers.mainThread())
             .subscribeReplay(
                 { view, (page, mangas) ->
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchController.kt
index 9f18df694e..012cff7200 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchController.kt
@@ -195,7 +195,7 @@ open class GlobalSearchController(
 
         adapter?.updateDataSet(searchResult)
 
-        val progress = searchResult.mapNotNull { it.results }.count().toDouble() / searchResult.size
+        val progress = searchResult.mapNotNull { it.results }.size.toDouble() / searchResult.size
         if (progress < 1) {
             binding.progressBar.isVisible = true
             binding.progressBar.progress = (progress * 100).toInt()
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchPresenter.kt
index 9912413c59..48214dbd66 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchPresenter.kt
@@ -222,9 +222,8 @@ open class GlobalSearchPresenter(
     private fun initializeFetchImageSubscription() {
         fetchImageSubscription?.unsubscribe()
         fetchImageSubscription = fetchImageSubject.observeOn(Schedulers.io())
-            .flatMap { pair ->
-                val source = pair.second
-                Observable.from(pair.first).filter { it.thumbnail_url == null && !it.initialized }
+            .flatMap { (first, source) ->
+                Observable.from(first).filter { it.thumbnail_url == null && !it.initialized }
                     .map { Pair(it, source) }
                     .concatMap { getMangaDetailsObservable(it.first, it.second) }
                     .map { Pair(source as CatalogueSource, it) }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryPresenter.kt
index 273d62e3ea..1c6aab6b6a 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/category/CategoryPresenter.kt
@@ -52,7 +52,7 @@ class CategoryPresenter(
         val cat = Category.create(name)
 
         // Set the new item in the last position.
-        cat.order = categories.map { it.order + 1 }.max() ?: 0
+        cat.order = categories.map { it.order + 1 }.maxOrNull() ?: 0
 
         // Insert into database.
         db.insertCategory(cat).asRxObservable().subscribe()
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt
index 21d8f481b2..8a46667aca 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt
@@ -101,11 +101,11 @@ class LibraryItem(val manga: LibraryManga, private val libraryDisplayMode: Prefe
     private fun containsGenre(tag: String, genres: List<String>?): Boolean {
         return if (tag.startsWith("-")) {
             genres?.find {
-                it.trim().toLowerCase() == tag.substringAfter("-").toLowerCase()
+                it.trim().equals(tag.substringAfter("-"), ignoreCase = true)
             } == null
         } else {
             genres?.find {
-                it.trim().toLowerCase() == tag.toLowerCase()
+                it.trim().equals(tag, ignoreCase = true)
             } != null
         }
     }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt
index 2bb7658b15..be0be7ec52 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt
@@ -409,9 +409,7 @@ class LibraryPresenter(
         val mc = mutableListOf<MangaCategory>()
 
         for (manga in mangas) {
-            for (cat in categories) {
-                mc.add(MangaCategory.create(manga, cat))
-            }
+            categories.mapTo(mc) { MangaCategory.create(manga, it) }
         }
 
         db.setMangaCategories(mc, mangas)
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/SetTrackReadingDatesDialog.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/SetTrackReadingDatesDialog.kt
index 36984dd64d..f1e0ee5ffe 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/SetTrackReadingDatesDialog.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/SetTrackReadingDatesDialog.kt
@@ -31,7 +31,7 @@ class SetTrackReadingDatesDialog<T> : DialogController
 
     @Suppress("unused")
     constructor(bundle: Bundle) : super(bundle) {
-        val track = bundle.getSerializable(SetTrackReadingDatesDialog.KEY_ITEM_TRACK) as Track
+        val track = bundle.getSerializable(KEY_ITEM_TRACK) as Track
         val service = Injekt.get<TrackManager>().getService(track.sync_id)!!
         item = TrackItem(track, service)
         dateToUpdate = ReadingDate.Start
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackAdapter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackAdapter.kt
index deb95aa950..221212ef7f 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackAdapter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackAdapter.kt
@@ -4,7 +4,6 @@ import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 import eu.kanade.tachiyomi.databinding.TrackItemBinding
-import eu.kanade.tachiyomi.util.view.inflate
 
 class TrackAdapter(controller: TrackController) : RecyclerView.Adapter<TrackHolder>() {
 
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackSearchAdapter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackSearchAdapter.kt
index dd8769ab03..0520f4260a 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackSearchAdapter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/track/TrackSearchAdapter.kt
@@ -47,7 +47,7 @@ class TrackSearchAdapter(context: Context) :
             binding.trackSearchTitle.text = track.title
             binding.trackSearchSummary.text = track.summary
             GlideApp.with(view.context).clear(binding.trackSearchCover)
-            if (!track.cover_url.isEmpty()) {
+            if (track.cover_url.isNotEmpty()) {
                 GlideApp.with(view.context)
                     .load(track.cover_url)
                     .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ChapterLoadStrategy.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ChapterLoadStrategy.kt
index f637e5b09f..0d5d18d60b 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ChapterLoadStrategy.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ChapterLoadStrategy.kt
@@ -39,7 +39,7 @@ class ChapterLoadByNumber {
 /**
  * Load strategy using the chapter upload date. This ordering ignores scanlators
  */
-class ChapterLoadByUploadDate() {
+class ChapterLoadByUploadDate {
     fun get(allChapters: List<Chapter>): List<Chapter> {
         return allChapters.sortedBy { it.date_upload }
     }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderSettingsSheet.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderSettingsSheet.kt
index 698660553f..e3ef93a445 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderSettingsSheet.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderSettingsSheet.kt
@@ -6,7 +6,6 @@ import android.widget.Spinner
 import androidx.annotation.ArrayRes
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
-import androidx.core.view.plusAssign
 import androidx.core.widget.NestedScrollView
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import com.tfcporciuncula.flow.Preference
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt
index e2a4492369..58676cb0ad 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt
@@ -152,7 +152,7 @@ class WebtoonViewer(val activity: ReaderActivity, val isContinuous: Boolean = tr
         // Initial opening - preload allowed
         currentPage ?: return true
 
-        val nextItem = adapter.items.getOrNull(adapter.items.count() - 1)
+        val nextItem = adapter.items.getOrNull(adapter.items.size - 1)
         val nextChapter = (nextItem as? ChapterTransition.Next)?.to ?: (nextItem as? ReaderPage)?.chapter
 
         // Allow preload for
diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/storage/EpubFile.kt b/app/src/main/java/eu/kanade/tachiyomi/util/storage/EpubFile.kt
index 656467850f..9a8b24be8e 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/util/storage/EpubFile.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/util/storage/EpubFile.kt
@@ -175,10 +175,10 @@ class EpubFile(file: File) : Closeable {
      */
     private fun getPathSeparator(): String {
         val meta = zip.getEntry("META-INF\\container.xml")
-        if (meta != null) {
-            return "\\"
+        return if (meta != null) {
+            "\\"
         } else {
-            return "/"
+            "/"
         }
     }
 
@@ -206,10 +206,10 @@ class EpubFile(file: File) : Closeable {
      */
     private fun getParentDirectory(path: String): String {
         val separatorIndex = path.lastIndexOf(pathSeparator)
-        if (separatorIndex >= 0) {
-            return path.substring(0, separatorIndex)
+        return if (separatorIndex >= 0) {
+            path.substring(0, separatorIndex)
         } else {
-            return ""
+            ""
         }
     }
 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/system/ImageUtil.kt b/app/src/main/java/eu/kanade/tachiyomi/util/system/ImageUtil.kt
index b519a3361e..ca6bb9a64d 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/util/system/ImageUtil.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/util/system/ImageUtil.kt
@@ -51,10 +51,7 @@ object ImageUtil {
     }
 
     private fun ByteArray.compareWith(magic: ByteArray): Boolean {
-        for (i in magic.indices) {
-            if (this[i] != magic[i]) return false
-        }
-        return true
+        return magic.indices.none { this[it] != magic[it] }
     }
 
     private fun charByteArrayOf(vararg bytes: Int): ByteArray {
diff --git a/build.gradle.kts b/build.gradle.kts
index 243efc4a7c..4430339fb3 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -26,8 +26,8 @@ subprojects {
 buildscript {
     dependencies {
         classpath("com.github.zellius:android-shortcut-gradle-plugin:0.1.2")
-        classpath("com.google.gms:google-services:4.3.3")
-        classpath("com.mikepenz.aboutlibraries.plugin:aboutlibraries-plugin:8.3.0")
+        classpath("com.google.gms:google-services:4.3.4")
+        classpath("com.mikepenz.aboutlibraries.plugin:aboutlibraries-plugin:" + BuildPluginsVersion.ABOUTLIB_PLUGIN)
         classpath(kotlin("serialization", version = BuildPluginsVersion.KOTLIN))
     }
     repositories {
diff --git a/buildSrc/src/main/kotlin/Dependencies.kt b/buildSrc/src/main/kotlin/Dependencies.kt
index 08d61fa29b..75f369cda9 100644
--- a/buildSrc/src/main/kotlin/Dependencies.kt
+++ b/buildSrc/src/main/kotlin/Dependencies.kt
@@ -2,5 +2,6 @@ object BuildPluginsVersion {
     const val AGP = "4.1.1"
     const val KOTLIN = "1.4.20"
     const val KOTLINTER = "3.0.2"
-    const val VERSIONS_PLUGIN = "0.33.0"
+    const val VERSIONS_PLUGIN = "0.36.0"
+    const val ABOUTLIB_PLUGIN = "8.6.3"
 }