diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index f0d7549a0..b27d04f2a 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -31,7 +31,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     
     <uses-sdk
         android:minSdkVersion="4"
-        android:targetSdkVersion="22" />
+        android:targetSdkVersion="23" />
 
     <application
         android:name="nya.miku.wishmaster.common.MainApplication"
diff --git a/build.gradle b/build.gradle
index 7b8798664..6080b8a36 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.2.3'
+        classpath 'com.android.tools.build:gradle:1.3.1'
     }
 }
 
@@ -23,11 +23,10 @@ dependencies {
 }
 
 android {
-    compileSdkVersion 22
-    buildToolsVersion "22.0.1"
+    compileSdkVersion 23
+    buildToolsVersion "23.0.2"
 
     packagingOptions {
-        exclude 'META-INF/DEPENDENCIES'
         exclude 'META-INF/INDEX.LIST'
         exclude 'META-INF/LICENSE'
         exclude 'META-INF/LICENSE.txt'
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 000000000..dfbe47874
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1 @@
+android.useDeprecatedNdk=true
diff --git a/project.properties b/project.properties
index 00cf62bac..916037e33 100644
--- a/project.properties
+++ b/project.properties
@@ -11,4 +11,4 @@
 #proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
 
 # Project target.
-target=android-22
+target=android-23
diff --git a/src/nya/miku/wishmaster/http/recaptcha/Recaptcha2fallback.java b/src/nya/miku/wishmaster/http/recaptcha/Recaptcha2fallback.java
index 9c86d54b1..9687fd63b 100644
--- a/src/nya/miku/wishmaster/http/recaptcha/Recaptcha2fallback.java
+++ b/src/nya/miku/wishmaster/http/recaptcha/Recaptcha2fallback.java
@@ -36,6 +36,7 @@
 import nya.miku.wishmaster.http.streamer.HttpStreamer;
 import nya.miku.wishmaster.lib.base64.Base64;
 import nya.miku.wishmaster.ui.AppearanceUtils;
+import nya.miku.wishmaster.ui.ResourcesCompat23;
 
 import org.apache.commons.lang3.tuple.Pair;
 import cz.msebera.android.httpclient.Header;
@@ -153,7 +154,7 @@ public void run() {
                             if (message != null) {
                                 TextView textView = new TextView(activity);
                                 textView.setText(message);
-                                textView.setTextAppearance(activity, android.R.style.TextAppearance);
+                                ResourcesCompat23.setTextAppearance(textView, android.R.style.TextAppearance);
                                 textView.setLayoutParams(new LinearLayout.LayoutParams(
                                         LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
                                 rootLayout.addView(textView);
diff --git a/src/nya/miku/wishmaster/lib/appcompat_v7_actionbartoogle/DrawerArrowDrawable.java b/src/nya/miku/wishmaster/lib/appcompat_v7_actionbartoogle/DrawerArrowDrawable.java
index 2a3eaf7e6..1b41f3e7a 100644
--- a/src/nya/miku/wishmaster/lib/appcompat_v7_actionbartoogle/DrawerArrowDrawable.java
+++ b/src/nya/miku/wishmaster/lib/appcompat_v7_actionbartoogle/DrawerArrowDrawable.java
@@ -18,6 +18,7 @@
 import android.graphics.drawable.Drawable;
 import android.util.TypedValue;
 //import android.support.v7.appcompat.R;
+import nya.miku.wishmaster.ui.ResourcesCompat23;
 
 /**
  * A drawable that can draw a "Drawer hamburger" menu or an Arrow and animate between them.
@@ -77,7 +78,7 @@ abstract class DrawerArrowDrawable extends Drawable {
             color = typedValue.data;
         } else {
             try {
-                color = context.getResources().getColor(typedValue.resourceId);
+                color = ResourcesCompat23.getColor(context.getResources(), typedValue.resourceId);
             } catch (Exception e) {
                 color = 0;
             }
diff --git a/src/nya/miku/wishmaster/lib/gallery/FixedSubsamplingScaleImageView.java b/src/nya/miku/wishmaster/lib/gallery/FixedSubsamplingScaleImageView.java
index 02f4b0476..46f46ae34 100644
--- a/src/nya/miku/wishmaster/lib/gallery/FixedSubsamplingScaleImageView.java
+++ b/src/nya/miku/wishmaster/lib/gallery/FixedSubsamplingScaleImageView.java
@@ -1278,11 +1278,10 @@ private int getRequiredRotation() {
     /**
      * Pythagoras distance between two points.
      */
-    @SuppressWarnings("deprecation")
     private float distance(float x0, float x1, float y0, float y1) {
         float x = x0 - x1;
         float y = y0 - y1;
-        return android.util.FloatMath.sqrt(x * x + y * y);
+        return (float) Math.sqrt(x * x + y * y);
     }
 
     /**
diff --git a/src/nya/miku/wishmaster/lib/pullable_layout/CircleImageView.java b/src/nya/miku/wishmaster/lib/pullable_layout/CircleImageView.java
index 28bff6a46..595b31867 100644
--- a/src/nya/miku/wishmaster/lib/pullable_layout/CircleImageView.java
+++ b/src/nya/miku/wishmaster/lib/pullable_layout/CircleImageView.java
@@ -17,6 +17,7 @@
 import android.support.v4.view.ViewCompat;
 import android.view.animation.Animation;
 import android.widget.ImageView;
+import nya.miku.wishmaster.ui.ResourcesCompat23;
 
 /**
  * Private class created to work around issues with AnimationListeners being
@@ -105,7 +106,7 @@ public void onAnimationEnd() {
     public void setBackgroundColor(int colorRes) {
         if (getBackground() instanceof ShapeDrawable) {
             final Resources res = getResources();
-            ((ShapeDrawable) getBackground()).getPaint().setColor(res.getColor(colorRes));
+            ((ShapeDrawable) getBackground()).getPaint().setColor(ResourcesCompat23.getColor(res, colorRes));
         }
     }
 
diff --git a/src/nya/miku/wishmaster/lib/pullable_layout/SwipeRefreshLayout.java b/src/nya/miku/wishmaster/lib/pullable_layout/SwipeRefreshLayout.java
index 8882f8c43..793888f3a 100644
--- a/src/nya/miku/wishmaster/lib/pullable_layout/SwipeRefreshLayout.java
+++ b/src/nya/miku/wishmaster/lib/pullable_layout/SwipeRefreshLayout.java
@@ -30,6 +30,7 @@
 import android.view.animation.Transformation;
 import android.widget.AbsListView;
 import android.widget.ScrollView;
+import nya.miku.wishmaster.ui.ResourcesCompat23;
 
 /**
  * The SwipeRefreshLayout should be used whenever the user can refresh the
@@ -460,7 +461,7 @@ public void applyTransformation(float interpolatedTime, Transformation t) {
      */
     public void setProgressBackgroundColor(int colorRes) {
         mCircleView.setBackgroundColor(colorRes);
-        mProgress.setBackgroundColor(getResources().getColor(colorRes));
+        mProgress.setBackgroundColor(ResourcesCompat23.getColor(getResources(), colorRes));
     }
 
     /**
@@ -482,7 +483,7 @@ public void setColorSchemeResources(int... colorResIds) {
         final Resources res = getResources();
         int[] colorRes = new int[colorResIds.length];
         for (int i = 0; i < colorResIds.length; i++) {
-            colorRes[i] = res.getColor(colorResIds[i]);
+            colorRes[i] = ResourcesCompat23.getColor(res, colorResIds[i]);
         }
         setColorSchemeColors(colorRes);
     }
diff --git a/src/nya/miku/wishmaster/ui/CompatibilityImpl.java b/src/nya/miku/wishmaster/ui/CompatibilityImpl.java
index 7dff1b122..f78026d07 100644
--- a/src/nya/miku/wishmaster/ui/CompatibilityImpl.java
+++ b/src/nya/miku/wishmaster/ui/CompatibilityImpl.java
@@ -28,6 +28,8 @@
 import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.ContextWrapper;
+import android.content.res.ColorStateList;
+import android.content.res.Resources;
 import android.graphics.Point;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
@@ -273,4 +275,19 @@ public static void setImageAlpha(ImageView imageView, int alpha) {
         imageView.setImageAlpha(alpha);
     }
     
+    @TargetApi(Build.VERSION_CODES.M)
+    public static int getColor(Resources resources, int id) {
+        return resources.getColor(id, null);
+    }
+    
+    @TargetApi(Build.VERSION_CODES.M)
+    public static ColorStateList getColorStateList(Resources resources, int id) {
+        return resources.getColorStateList(id, null);
+    }
+    
+    @TargetApi(Build.VERSION_CODES.M)
+    public static void setTextAppearance(TextView textView, int resId) {
+        textView.setTextAppearance(resId);
+    }
+    
 }
diff --git a/src/nya/miku/wishmaster/ui/ResourcesCompat23.java b/src/nya/miku/wishmaster/ui/ResourcesCompat23.java
new file mode 100644
index 000000000..7a9210374
--- /dev/null
+++ b/src/nya/miku/wishmaster/ui/ResourcesCompat23.java
@@ -0,0 +1,54 @@
+/*
+ * Overchan Android (Meta Imageboard Client)
+ * Copyright (C) 2014-2015  miku-nyan <https://github.com/miku-nyan>
+ *     
+ * 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/>.
+ */
+
+package nya.miku.wishmaster.ui;
+
+import android.content.res.ColorStateList;
+import android.content.res.Resources;
+import android.os.Build;
+import android.widget.TextView;
+
+public class ResourcesCompat23 {
+    
+    @SuppressWarnings("deprecation")
+    public static int getColor(Resources resources, int id) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            return resources.getColor(id);
+        } else {
+            return CompatibilityImpl.getColor(resources, id);
+        }
+    }
+    
+    @SuppressWarnings("deprecation")
+    public static ColorStateList getColorStateList(Resources resources, int id) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            return resources.getColorStateList(id);
+        } else {
+            return CompatibilityImpl.getColorStateList(resources, id);
+        }
+    }
+    
+    @SuppressWarnings("deprecation")
+    public static void setTextAppearance(TextView textView, int resId) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            textView.setTextAppearance(textView.getContext(), resId);
+        } else {
+            CompatibilityImpl.setTextAppearance(textView, resId);
+        }
+    }
+}
diff --git a/src/nya/miku/wishmaster/ui/presentation/BoardFragment.java b/src/nya/miku/wishmaster/ui/presentation/BoardFragment.java
index d05e99b98..3fa246895 100644
--- a/src/nya/miku/wishmaster/ui/presentation/BoardFragment.java
+++ b/src/nya/miku/wishmaster/ui/presentation/BoardFragment.java
@@ -66,6 +66,7 @@
 import nya.miku.wishmaster.ui.GalleryActivity;
 import nya.miku.wishmaster.ui.MainActivity;
 import nya.miku.wishmaster.ui.QuickAccess;
+import nya.miku.wishmaster.ui.ResourcesCompat23;
 import nya.miku.wishmaster.ui.downloading.DownloadingService;
 import nya.miku.wishmaster.ui.downloading.BackgroundThumbDownloader;
 import nya.miku.wishmaster.ui.posting.PostFormActivity;
@@ -3303,7 +3304,7 @@ public void run() {
             
             final Button btnToSelecting = new Button(activity);
             btnToSelecting.setText(R.string.grid_gallery_select);
-            btnToSelecting.setTextAppearance(activity, android.R.style.TextAppearance_Small);
+            ResourcesCompat23.setTextAppearance(btnToSelecting, android.R.style.TextAppearance_Small);
             btnToSelecting.setSingleLine();
             btnToSelecting.setVisibility(View.VISIBLE);
             btnToSelecting.setLayoutParams(
@@ -3315,17 +3316,17 @@ public void run() {
             Button btnDownload = new Button(activity);
             btnDownload.setLayoutParams(new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 3.25f));
             btnDownload.setText(R.string.grid_gallery_download);
-            btnDownload.setTextAppearance(activity, android.R.style.TextAppearance_Small);
+            ResourcesCompat23.setTextAppearance(btnDownload, android.R.style.TextAppearance_Small);
             btnDownload.setSingleLine();
             Button btnSelectAll = new Button(activity);
             btnSelectAll.setLayoutParams(new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 3.75f));
             btnSelectAll.setText(android.R.string.selectAll);
-            btnSelectAll.setTextAppearance(activity, android.R.style.TextAppearance_Small);
+            ResourcesCompat23.setTextAppearance(btnSelectAll, android.R.style.TextAppearance_Small);
             btnSelectAll.setSingleLine();
             Button btnCancel = new Button(activity);
             btnCancel.setLayoutParams(new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 3f));
             btnCancel.setText(android.R.string.cancel);
-            btnCancel.setTextAppearance(activity, android.R.style.TextAppearance_Small);
+            ResourcesCompat23.setTextAppearance(btnCancel, android.R.style.TextAppearance_Small);
             btnCancel.setSingleLine();
             layoutSelectingButtons.addView(btnDownload);
             layoutSelectingButtons.addView(btnSelectAll);
diff --git a/src/nya/miku/wishmaster/ui/presentation/HtmlParser.java b/src/nya/miku/wishmaster/ui/presentation/HtmlParser.java
index e890ee4ae..f4945e63e 100644
--- a/src/nya/miku/wishmaster/ui/presentation/HtmlParser.java
+++ b/src/nya/miku/wishmaster/ui/presentation/HtmlParser.java
@@ -21,6 +21,7 @@
 package nya.miku.wishmaster.ui.presentation;
 
 import android.graphics.Color;
+import nya.miku.wishmaster.ui.ResourcesCompat23;
 import nya.miku.wishmaster.ui.presentation.ClickableURLSpan.URLSpanClickListener;
 import nya.miku.wishmaster.ui.presentation.ThemeUtils.ThemeColors;
 
@@ -537,7 +538,7 @@ private static void endFont(SpannableStringBuilder text) {
                     String name = f.mColor.substring(1);
                     int colorRes = res.getIdentifier(name, "color", "android");
                     if (colorRes != 0) {
-                        ColorStateList colors = res.getColorStateList(colorRes);
+                        ColorStateList colors = ResourcesCompat23.getColorStateList(res, colorRes);
                         text.setSpan(new TextAppearanceSpan(null, 0, 0, colors, null), where, len, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                     }
                 } else {