diff --git a/app/src/main/java/eu/kanade/tachiyomi/network/CloudflareInterceptor.kt b/app/src/main/java/eu/kanade/tachiyomi/network/CloudflareInterceptor.kt
index 49ddc16fb..d26b3a0e2 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/network/CloudflareInterceptor.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/network/CloudflareInterceptor.kt
@@ -2,7 +2,6 @@ package eu.kanade.tachiyomi.network
 
 import android.annotation.SuppressLint
 import android.content.Context
-import android.os.Build
 import android.os.Handler
 import android.os.Looper
 import android.webkit.WebSettings
@@ -114,10 +113,7 @@ class CloudflareInterceptor(private val context: Context) : Interceptor {
                         latch.countDown()
                     }
 
-                    // HTTP error codes are only received since M
-                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
-                        url == origRequestUrl && !challengeFound
-                    ) {
+                    if (url == origRequestUrl && !challengeFound) {
                         // The first request didn't return the challenge, abort.
                         latch.countDown()
                     }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseThemedActivity.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseThemedActivity.kt
index afd4d1028..40d3074cb 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseThemedActivity.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseThemedActivity.kt
@@ -32,10 +32,6 @@ abstract class BaseThemedActivity : AppCompatActivity() {
                         R.style.Theme_Tachiyomi_Light_Api27
                     }
                     // Light status bar + fallback gray navigation bar
-                    Build.VERSION.SDK_INT >= Build.VERSION_CODES.M -> {
-                        R.style.Theme_Tachiyomi_Light_Api23
-                    }
-                    // Fallback gray status + navigation bar
                     else -> {
                         R.style.Theme_Tachiyomi_Light
                     }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/base/controller/ConductorExtensions.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/base/controller/ConductorExtensions.kt
index ce9fbb586..a91acb5ea 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/base/controller/ConductorExtensions.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/base/controller/ConductorExtensions.kt
@@ -2,7 +2,6 @@ package eu.kanade.tachiyomi.ui.base.controller
 
 import android.content.Intent
 import android.content.pm.PackageManager.PERMISSION_GRANTED
-import android.os.Build
 import androidx.core.content.ContextCompat
 import androidx.core.net.toUri
 import com.bluelinelabs.conductor.Controller
@@ -21,11 +20,9 @@ fun Router.popControllerWithTag(tag: String): Boolean {
 
 fun Controller.requestPermissionsSafe(permissions: Array<String>, requestCode: Int) {
     val activity = activity ?: return
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-        permissions.forEach { permission ->
-            if (ContextCompat.checkSelfPermission(activity, permission) != PERMISSION_GRANTED) {
-                requestPermissions(arrayOf(permission), requestCode)
-            }
+    permissions.forEach { permission ->
+        if (ContextCompat.checkSelfPermission(activity, permission) != PERMISSION_GRANTED) {
+            requestPermissions(arrayOf(permission), requestCode)
         }
     }
 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt
index 597fcfb4e..272bd4f29 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt
@@ -290,23 +290,17 @@ class MangaController :
         fab.setOnClickListener {
             val item = presenter.getNextUnreadChapter()
             if (item != null) {
-                // Create animation listener
-                val revealAnimationListener: Animator.AnimatorListener = object : AnimatorListenerAdapter() {
-                    override fun onAnimationStart(animation: Animator?) {
-                        openChapter(item.chapter, true)
-                    }
-                }
-
                 // Get coordinates and start animation
                 actionFab?.getCoordinates()?.let { coordinates ->
-                    if (!binding.revealView.showRevealEffect(
-                            coordinates.x,
-                            coordinates.y,
-                            revealAnimationListener
-                        )
-                    ) {
-                        openChapter(item.chapter)
-                    }
+                    binding.revealView.showRevealEffect(
+                        coordinates.x,
+                        coordinates.y,
+                        object : AnimatorListenerAdapter() {
+                            override fun onAnimationStart(animation: Animator?) {
+                                openChapter(item.chapter, true)
+                            }
+                        }
+                    )
                 }
             } else {
                 view?.context?.toast(R.string.no_next_chapter)
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoHeaderAdapter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoHeaderAdapter.kt
index ee3e6ddb3..411d56d7c 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoHeaderAdapter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoHeaderAdapter.kt
@@ -1,7 +1,5 @@
 package eu.kanade.tachiyomi.ui.manga.info
 
-import android.graphics.PorterDuff
-import android.os.Build
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -21,7 +19,6 @@ import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.ui.manga.MangaController
 import eu.kanade.tachiyomi.util.system.copyToClipboard
-import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.view.setChips
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.merge
@@ -304,18 +301,6 @@ class MangaInfoHeaderAdapter(
                     initialLoad = false
                 }
             }
-
-            // backgroundTint attribute doesn't work properly on Android 5
-            if (Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP) {
-                listOf(binding.backdropOverlay, binding.mangaInfoToggleMoreScrim)
-                    .forEach {
-                        @Suppress("DEPRECATION")
-                        it.background.setColorFilter(
-                            view.context.getResourceColor(android.R.attr.colorBackground),
-                            PorterDuff.Mode.SRC_ATOP
-                        )
-                    }
-            }
         }
 
         private fun showMangaInfo(visible: Boolean) {
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAdvancedController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAdvancedController.kt
index 636e3faa6..6f35f9836 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAdvancedController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsAdvancedController.kt
@@ -4,7 +4,6 @@ import android.annotation.SuppressLint
 import android.app.Dialog
 import android.content.ActivityNotFoundException
 import android.content.Intent
-import android.os.Build
 import android.os.Bundle
 import android.provider.Settings
 import androidx.core.net.toUri
@@ -64,27 +63,25 @@ class SettingsAdvancedController : SettingsController() {
             }
         }
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-            preference {
-                key = "pref_disable_battery_optimization"
-                titleRes = R.string.pref_disable_battery_optimization
-                summaryRes = R.string.pref_disable_battery_optimization_summary
+        preference {
+            key = "pref_disable_battery_optimization"
+            titleRes = R.string.pref_disable_battery_optimization
+            summaryRes = R.string.pref_disable_battery_optimization_summary
 
-                onClick {
-                    val packageName: String = context.packageName
-                    if (!context.powerManager.isIgnoringBatteryOptimizations(packageName)) {
-                        try {
-                            val intent = Intent().apply {
-                                action = Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
-                                data = "package:$packageName".toUri()
-                            }
-                            startActivity(intent)
-                        } catch (e: ActivityNotFoundException) {
-                            context.toast(R.string.battery_optimization_setting_activity_not_found)
+            onClick {
+                val packageName: String = context.packageName
+                if (!context.powerManager.isIgnoringBatteryOptimizations(packageName)) {
+                    try {
+                        val intent = Intent().apply {
+                            action = Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
+                            data = "package:$packageName".toUri()
                         }
-                    } else {
-                        context.toast(R.string.battery_optimization_disabled)
+                        startActivity(intent)
+                    } catch (e: ActivityNotFoundException) {
+                        context.toast(R.string.battery_optimization_setting_activity_not_found)
                     }
+                } else {
+                    context.toast(R.string.battery_optimization_disabled)
                 }
             }
         }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/util/system/WebViewClientCompat.kt b/app/src/main/java/eu/kanade/tachiyomi/util/system/WebViewClientCompat.kt
index 8d2eea7cf..5ccbb4f7e 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/util/system/WebViewClientCompat.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/util/system/WebViewClientCompat.kt
@@ -54,7 +54,6 @@ abstract class WebViewClientCompat : WebViewClient() {
         return shouldInterceptRequestCompat(view, url)
     }
 
-    @TargetApi(Build.VERSION_CODES.M)
     final override fun onReceivedError(
         view: WebView,
         request: WebResourceRequest,
@@ -78,7 +77,6 @@ abstract class WebViewClientCompat : WebViewClient() {
         onReceivedErrorCompat(view, errorCode, description, failingUrl, failingUrl == view.url)
     }
 
-    @TargetApi(Build.VERSION_CODES.M)
     final override fun onReceivedHttpError(
         view: WebView,
         request: WebResourceRequest,
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/ElevationAppBarLayout.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/ElevationAppBarLayout.kt
index 66057589f..ad0e52e03 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/widget/ElevationAppBarLayout.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/widget/ElevationAppBarLayout.kt
@@ -3,7 +3,6 @@ package eu.kanade.tachiyomi.widget
 import android.animation.ObjectAnimator
 import android.animation.StateListAnimator
 import android.content.Context
-import android.os.Build
 import android.util.AttributeSet
 import com.google.android.material.R
 import com.google.android.material.appbar.AppBarLayout
@@ -20,12 +19,7 @@ class ElevationAppBarLayout @JvmOverloads constructor(
     }
 
     fun enableElevation(liftOnScroll: Boolean) {
-        if (Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP) {
-            // Delay to avoid crash
-            post { setElevation(liftOnScroll) }
-        } else {
-            setElevation(liftOnScroll)
-        }
+        setElevation(liftOnScroll)
     }
 
     private fun setElevation(liftOnScroll: Boolean) {
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/RevealAnimationView.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/RevealAnimationView.kt
index 8201d3b4a..6bd1546f1 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/widget/RevealAnimationView.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/widget/RevealAnimationView.kt
@@ -49,10 +49,8 @@ class RevealAnimationView @JvmOverloads constructor(context: Context, attrs: Att
      * @param centerX x starting point
      * @param centerY y starting point
      * @param listener animation listener
-     *
-     * @return sdk version lower then 21
      */
-    fun showRevealEffect(centerX: Int, centerY: Int, listener: Animator.AnimatorListener): Boolean {
+    fun showRevealEffect(centerX: Int, centerY: Int, listener: Animator.AnimatorListener) {
         this.isVisible = true
 
         val height = this.height
@@ -71,6 +69,5 @@ class RevealAnimationView @JvmOverloads constructor(context: Context, attrs: Att
 
         anim.addListener(listener)
         anim.start()
-        return true
     }
 }
diff --git a/app/src/main/res/values-v23/themes.xml b/app/src/main/res/values-v23/themes.xml
deleted file mode 100644
index bc8372bff..000000000
--- a/app/src/main/res/values-v23/themes.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="Theme.Tachiyomi.Light.Api23">
-        <item name="android:statusBarColor">@android:color/transparent</item>
-        <item name="android:windowLightStatusBar">true</item>
-    </style>
-
-</resources>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index def145cf5..a90c3308c 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -88,7 +88,8 @@
     <!-- Main Theme-->
     <!--===========-->
     <style name="Theme.Tachiyomi.Light" parent="Theme.Base">
-        <item name="android:statusBarColor">@color/md_black_1000_54</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
+        <item name="android:windowLightStatusBar">true</item>
         <item name="android:navigationBarColor">@color/md_black_1000_54</item>
 
         <item name="colorFilterActive">@color/filterColorLight</item>
diff --git a/app/src/test/java/eu/kanade/tachiyomi/data/backup/BackupTest.kt b/app/src/test/java/eu/kanade/tachiyomi/data/backup/BackupTest.kt
index 12f233c40..ddd97e243 100644
--- a/app/src/test/java/eu/kanade/tachiyomi/data/backup/BackupTest.kt
+++ b/app/src/test/java/eu/kanade/tachiyomi/data/backup/BackupTest.kt
@@ -41,7 +41,7 @@ import uy.kohesive.injekt.api.addSingleton
  * Test class for the [LegacyBackupManager].
  * Note that this does not include the backup create/restore services.
  */
-@Config(constants = BuildConfig::class, sdk = [Build.VERSION_CODES.LOLLIPOP])
+@Config(constants = BuildConfig::class, sdk = [Build.VERSION_CODES.M])
 @RunWith(CustomRobolectricGradleTestRunner::class)
 class BackupTest {
     // Create root object
diff --git a/app/src/test/java/eu/kanade/tachiyomi/data/database/CategoryTest.kt b/app/src/test/java/eu/kanade/tachiyomi/data/database/CategoryTest.kt
index 76f9aba0f..5e5ab0ba3 100644
--- a/app/src/test/java/eu/kanade/tachiyomi/data/database/CategoryTest.kt
+++ b/app/src/test/java/eu/kanade/tachiyomi/data/database/CategoryTest.kt
@@ -13,7 +13,7 @@ import org.junit.runner.RunWith
 import org.robolectric.RuntimeEnvironment
 import org.robolectric.annotation.Config
 
-@Config(constants = BuildConfig::class, sdk = [Build.VERSION_CODES.LOLLIPOP])
+@Config(constants = BuildConfig::class, sdk = [Build.VERSION_CODES.M])
 @RunWith(CustomRobolectricGradleTestRunner::class)
 class CategoryTest {
 
diff --git a/app/src/test/java/eu/kanade/tachiyomi/data/library/LibraryUpdateServiceTest.kt b/app/src/test/java/eu/kanade/tachiyomi/data/library/LibraryUpdateServiceTest.kt
index 7bed711c8..d852a13e3 100644
--- a/app/src/test/java/eu/kanade/tachiyomi/data/library/LibraryUpdateServiceTest.kt
+++ b/app/src/test/java/eu/kanade/tachiyomi/data/library/LibraryUpdateServiceTest.kt
@@ -28,7 +28,7 @@ import uy.kohesive.injekt.api.InjektModule
 import uy.kohesive.injekt.api.InjektRegistrar
 import uy.kohesive.injekt.api.addSingleton
 
-@Config(constants = BuildConfig::class, sdk = [Build.VERSION_CODES.LOLLIPOP])
+@Config(constants = BuildConfig::class, sdk = [Build.VERSION_CODES.M])
 @RunWith(CustomRobolectricGradleTestRunner::class)
 class LibraryUpdateServiceTest {
 
diff --git a/buildSrc/src/main/kotlin/AndroidConfig.kt b/buildSrc/src/main/kotlin/AndroidConfig.kt
index 1182a4792..a8d0b5dbc 100644
--- a/buildSrc/src/main/kotlin/AndroidConfig.kt
+++ b/buildSrc/src/main/kotlin/AndroidConfig.kt
@@ -1,6 +1,6 @@
 object AndroidConfig {
     const val compileSdk = 29
-    const val minSdk = 21
+    const val minSdk = 23
     const val targetSdk = 29
     const val buildTools = "30.0.3"
     const val ndk = "22.0.7026061"