diff --git a/app/build.gradle b/app/build.gradle
index 09b76794..36fb75df 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -21,7 +21,7 @@ android {
         minSdkVersion 16
         targetSdkVersion 30
         versionCode 59
-        versionName "5.0.1"
+        versionName "5.0.1-hotfix1"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
     }
diff --git a/app/libs/recyclerviewfastscroller-release.aar b/app/libs/recyclerviewfastscroller-release.aar
index 01804c5c..ce379483 100644
Binary files a/app/libs/recyclerviewfastscroller-release.aar and b/app/libs/recyclerviewfastscroller-release.aar differ
diff --git a/app/release/output-metadata.json b/app/release/output-metadata.json
index 30815387..61e9b8ca 100644
--- a/app/release/output-metadata.json
+++ b/app/release/output-metadata.json
@@ -12,7 +12,7 @@
       "filters": [],
       "properties": [],
       "versionCode": 59,
-      "versionName": "5.0.1",
+      "versionName": "5.0.1-hotfix1",
       "enabled": true,
       "outputFile": "app-release.apk"
     }
diff --git a/app/src/main/res/layout-v23/activity_main_content.xml b/app/src/main/res/layout-v23/activity_main_content.xml
new file mode 100644
index 00000000..35157a5a
--- /dev/null
+++ b/app/src/main/res/layout-v23/activity_main_content.xml
@@ -0,0 +1,150 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2019  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.MainActivity">
+
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <com.google.android.material.appbar.AppBarLayout
+            android:id="@+id/main_appbar_layout"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@color/transparent"
+            android:visibility="invisible"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent">
+
+            <View
+                android:layout_width="match_parent"
+                android:layout_height="64dp"
+                android:visibility="invisible"
+                android:background="@color/transparent"
+                app:layout_scrollFlags="scroll|enterAlways"
+                app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
+
+        </com.google.android.material.appbar.AppBarLayout>
+
+        <androidx.core.widget.ContentLoadingProgressBar
+            style="?android:attr/progressBarStyle"
+            android:id="@+id/main_progressbar"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:indeterminate="true"/>
+
+        <TextView
+            android:id="@+id/main_noresult"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="@string/main_no_result"
+            android:visibility="invisible"/>
+
+        <com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            app:handleDrawable="@drawable/thumb"
+            app:handleHasFixedSize="true"
+            app:handleHeight="72dp"
+            app:handleWidth="24dp"
+            app:trackMarginStart="64dp"
+            app:addLastItemPadding="true"
+            app:popupDrawable="@color/transparent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/main_recyclerview"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:paddingTop="64dp"
+                android:clipToPadding="false"
+                app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>
+
+        </com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller>
+
+        <com.github.clans.fab.FloatingActionMenu
+                android:id="@+id/main_fab"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="bottom|end"
+                android:layout_margin="16dp"
+                app:menu_colorNormal="@color/colorAccent">
+
+            <com.github.clans.fab.FloatingActionButton
+                android:id="@+id/main_fab_cancel"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                app:fab_label="@string/main_fab_cancel"
+                app:fab_size="mini"/>
+
+            <com.github.clans.fab.FloatingActionButton
+                android:id="@+id/main_fab_jump"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                app:fab_label="@string/main_jump_title"
+                app:fab_size="mini"/>
+
+            <com.github.clans.fab.FloatingActionButton
+                android:id="@+id/main_fab_random"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                app:fab_label="@string/main_fab_random"
+                app:fab_size="mini"/>
+
+            <com.github.clans.fab.FloatingActionButton
+                android:id="@+id/main_fab_id"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                app:fab_label="@string/main_open_gallery_by_id"
+                app:fab_size="mini"/>
+
+        </com.github.clans.fab.FloatingActionMenu>
+
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+
+    <com.arlib.floatingsearchview.FloatingSearchViewDayNight
+        android:id="@+id/main_searchview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:floatingSearch_backgroundColor="?android:attr/colorBackgroundFloating"
+        app:floatingSearch_leftActionColor="?attr/colorControlNormal"
+        app:floatingSearch_menuItemIconColor="?attr/colorControlNormal"
+        app:floatingSearch_actionMenuOverflowColor="?attr/colorControlNormal"
+        app:floatingSearch_clearBtnColor="?attr/colorControlNormal"
+        app:floatingSearch_viewTextColor="?android:attr/textColorPrimary"
+        app:floatingSearch_suggestionRightIconColor="@color/material_orange_500"
+        app:floatingSearch_searchBarMarginLeft="8dp"
+        app:floatingSearch_searchBarMarginRight="8dp"
+        app:floatingSearch_searchBarMarginTop="8dp"
+        app:floatingSearch_searchHint="@string/search_hint"
+        app:floatingSearch_suggestionsListAnimDuration="250"
+        app:floatingSearch_showSearchKey="true"
+        app:floatingSearch_leftActionMode="showHamburger"
+        app:floatingSearch_menu="@menu/main"
+        app:floatingSearch_dismissOnOutsideTouch="true"
+        app:floatingSearch_close_search_on_keyboard_dismiss="true"
+        tools:ignore="NewApi" />
+
+</RelativeLayout>
\ No newline at end of file