diff --git a/app/build.gradle b/app/build.gradle
index 9d0e7a8..c2f4985 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 28
+    buildToolsVersion "28.0.2"
 
     defaultConfig {
         applicationId "com.sdsmdg.demoexample"
-        minSdkVersion 11
-        targetSdkVersion 25
+        minSdkVersion 14
+        targetSdkVersion 28
         versionCode 3
         versionName "1.1.2"
         testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
@@ -28,7 +28,7 @@ dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
     compile project(":tastytoast")
-    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile 'com.android.support:appcompat-v7:28.0.0'
     androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     }
diff --git a/build.gradle b/build.gradle
index 23295be..fa90618 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,10 +2,12 @@
 
 buildscript {
     repositories {
+        maven {url 'http://maven.aliyun.com/nexus/content/groups/public/'}
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
 
@@ -16,7 +18,9 @@ buildscript {
 
 allprojects {
     repositories {
+        maven {url 'http://maven.aliyun.com/nexus/content/groups/public/'}
         jcenter()
+        google()
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 52a8df0..30b3804 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
diff --git a/tastytoast/build.gradle b/tastytoast/build.gradle
index 873bc74..cf54e83 100644
--- a/tastytoast/build.gradle
+++ b/tastytoast/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 28
+    buildToolsVersion "28.0.2"
 
     defaultConfig {
-        minSdkVersion 11
-        targetSdkVersion 25
+        minSdkVersion 14
+        targetSdkVersion 28
         versionCode 7
         versionName "0.1.1"
     }
@@ -24,7 +24,7 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile 'com.android.support:appcompat-v7:28.0.0'
     compile 'com.facebook.rebound:rebound:0.3.8'
 }