diff --git a/build.sbt b/build.sbt
index cca671ae..40185dbe 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ lazy val commonSettings = Seq(
 
   organization := "com.github.shadowsocks",
 
-  platformTarget := "android-26",
+  platformTarget := "android-27",
 
   compileOrder := CompileOrder.JavaThenScala,
   javacOptions ++= "-source" :: "1.7" :: "-target" :: "1.7" :: Nil,
@@ -23,7 +23,7 @@ lazy val commonSettings = Seq(
   resolvers += "google" at "https://maven.google.com"
 )
 
-val supportLibsVersion = "26.1.0"
+val supportLibsVersion = "27.0.0"
 lazy val root = Project(id = "shadowsocks-android", base = file("."))
   .settings(commonSettings)
   .aggregate(plugin, mobile)
diff --git a/mobile/src/main/AndroidManifest.xml b/mobile/src/main/AndroidManifest.xml
index 4f610940..fbbe3bff 100644
--- a/mobile/src/main/AndroidManifest.xml
+++ b/mobile/src/main/AndroidManifest.xml
@@ -17,7 +17,7 @@
 
     <uses-sdk
             android:minSdkVersion="19"
-            android:targetSdkVersion="26"/>
+            android:targetSdkVersion="27"/>
 
     <meta-data android:name="android.webkit.WebView.EnableSafeBrowsing"
                android:value="true" />
diff --git a/plugin/src/main/AndroidManifest.xml b/plugin/src/main/AndroidManifest.xml
index ca89bcc9..25974a70 100644
--- a/plugin/src/main/AndroidManifest.xml
+++ b/plugin/src/main/AndroidManifest.xml
@@ -2,7 +2,7 @@
           package="com.github.shadowsocks.plugin">
     <uses-sdk
             android:minSdkVersion="19"
-            android:targetSdkVersion="26"/>
+            android:targetSdkVersion="27"/>
     <application
             android:theme="@style/Theme.Shadowsocks">
         <meta-data android:name="com.github.shadowsocks.plugin.version"