diff --git a/README-zh.md b/README-zh.md
index f77682f..83efab7 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -56,13 +56,10 @@ allprojects {
     }
 }
 
-`SNAPSHOT`
-dependencies {
-    compile 'com.github.yaming116:UpdateApp:1.0.4-SNAPSHOT'
-}
+
 
 dependencies {
-    compile 'com.github.yaming116:UpdateApp:1.0.4'
+    compile 'com.github.yaming116:UpdateApp:1.0.5'
 }
 ```
 
diff --git a/app/build.gradle b/app/build.gradle
index adf7b25..34a5064 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.1"
 
     defaultConfig {
         applicationId "me.shenfan.updateapp.sample"
         minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
     }
diff --git a/build.gradle b/build.gradle
index 37abb1e..44e1d9a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,6 +15,7 @@ buildscript {
 allprojects {
     repositories {
         maven { url "https://www.jitpack.io" }
+        maven {url "https://dl.google.com/dl/android/maven2/"}
         jcenter()
     }
 }
diff --git a/library/build.gradle b/library/build.gradle
index 3a7250f..0554b60 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 26
+    buildToolsVersion "25.0.1"
 
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 26
         versionCode 3
         versionName "1.0.4"
     }
@@ -25,5 +25,5 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:support-core-utils:25.3.1'
+    provided 'com.android.support:support-core-utils:25.3.1'
 }
diff --git a/library/src/main/java/android/support/v4/app/LocalNotificationCompat.java b/library/src/main/java/android/support/v4/app/LocalNotificationCompat.java
new file mode 100644
index 0000000..638f995
--- /dev/null
+++ b/library/src/main/java/android/support/v4/app/LocalNotificationCompat.java
@@ -0,0 +1,62 @@
+package android.support.v4.app;
+
+import android.app.Notification;
+import android.content.Context;
+import android.support.annotation.NonNull;
+
+import java.util.ArrayList;
+
+/**
+ * Created by ucmed on 2018/3/8.
+ */
+public class LocalNotificationCompat extends NotificationCompat {
+    public static class Builder extends NotificationCompat.Builder{
+        String mChannelId;
+        /**
+         * Constructor.
+         *
+         * Automatically sets the when field to {@link System#currentTimeMillis()
+         * System.currentTimeMillis()} and the audio stream to the
+         * {@link Notification#STREAM_DEFAULT}.
+         *
+         * @param context A {@link Context} that will be used to construct the
+         *      RemoteViews. The Context will not be held past the lifetime of this
+         *      Builder object.
+         * @param channelId The constructed Notification will be posted on this
+         *      NotificationChannel.
+         */
+        public Builder(@NonNull Context context, @NonNull String channelId) {
+            super(context);
+            mContext = context;
+            mChannelId = channelId;
+
+            // Set defaults to match the defaults of a Notification
+            mNotification.when = System.currentTimeMillis();
+            mNotification.audioStreamType = Notification.STREAM_DEFAULT;
+            mPriority = PRIORITY_DEFAULT;
+            mPeople = new ArrayList<String>();
+        }
+
+        /**
+         * @deprecated use {@link #LocalNotificationCompat.Builder(Context,String)} instead.
+         * All posted Notifications must specify a NotificationChannel Id.
+         */
+        @Deprecated
+        public Builder(Context context) {
+            this(context, null);
+        }
+
+
+        /**
+         * Specifies the channel the notification should be delivered on.
+         *
+         * No-op on versions prior to {@link android.os.Build.VERSION_CODES#O} .
+         */
+        public Builder setChannelId(@NonNull String channelId) {
+            mChannelId = channelId;
+            return this;
+        }
+    }
+
+
+}
diff --git a/library/src/main/java/me/shenfan/updateapp/UpdateService.java b/library/src/main/java/me/shenfan/updateapp/UpdateService.java
index 65371b4..39e4b1c 100644
--- a/library/src/main/java/me/shenfan/updateapp/UpdateService.java
+++ b/library/src/main/java/me/shenfan/updateapp/UpdateService.java
@@ -1,6 +1,8 @@
 package me.shenfan.updateapp;
 
+import android.annotation.TargetApi;
 import android.app.Notification;
+import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
@@ -10,6 +12,7 @@
 import android.content.pm.PackageManager;
 import android.content.pm.ProviderInfo;
 import android.graphics.BitmapFactory;
+import android.graphics.Color;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Binder;
@@ -17,7 +20,7 @@
 import android.os.Environment;
 import android.os.IBinder;
 import android.support.annotation.Nullable;
-import android.support.v4.app.NotificationCompat;
+import android.support.v4.app.LocalNotificationCompat;
 import android.support.v4.content.FileProvider;
 import android.support.v4.content.LocalBroadcastManager;
 import android.text.TextUtils;
@@ -91,7 +94,7 @@ public void setUpdateProgressListener(UpdateProgressListener listener) {
 
     private boolean startDownload;//开始下载
     private int lastProgressNumber;
-    private NotificationCompat.Builder builder;
+    private LocalNotificationCompat.Builder builder;
     private NotificationManager manager;
     private int notifyId;
     private String appName;
@@ -271,9 +274,23 @@ private void sendLocalBroadcast(int status, int progress) {
         localBroadcastManager.sendBroadcast(localIntent);
     }
 
+    @TargetApi(26)
     private void buildNotification() {
         manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
-        builder = new NotificationCompat.Builder(this);
+        builder = new LocalNotificationCompat.Builder(this);
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
+            CharSequence name = "update_channel";
+            String Description = "zhuojian update channel";
+            int importance = NotificationManager.IMPORTANCE_HIGH;
+            NotificationChannel mChannel = new NotificationChannel(String.valueOf(notifyId), name, importance);
+            mChannel.setDescription(Description);
+            mChannel.enableLights(true);
+            mChannel.setLightColor(Color.BLUE);
+            mChannel.enableVibration(true);
+            mChannel.setShowBadge(false);
+            manager.createNotificationChannel(mChannel);
+            builder.setChannelId(String.valueOf(notifyId));
+        }
         builder.setContentTitle(getString(R.string.update_app_model_prepare, appName))
                 .setWhen(System.currentTimeMillis())
                 .setProgress(100, 1, false)
@@ -285,6 +302,7 @@ private void buildNotification() {
         manager.notify(notifyId, builder.build());
     }
 
+
     private void start() {
         builder.setContentTitle(appName);
         builder.setContentText(getString(R.string.update_app_model_progress, 1, "%"));