diff --git a/README.md b/README.md
index cfa143b..60588c6 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
 # RxCache
+
+[ ![Download](https://api.bintray.com/packages/zchu/maven/rxcache/images/download.svg) ](https://bintray.com/zchu/maven/rxcache/_latestVersion)
+
 简单一步，缓存搞定。这是一个专用于RxJava，解决Android中网络请求的缓存处理框架。
 
 <img src="/screenshots/s0.gif" alt="screenshot" title="screenshot" width="270" height="486" />
@@ -77,6 +80,6 @@ gankApi.getHistoryGank(1)
 ### 引入
 ```groovy
 dependencies {
-	compile 'com.zchu:rxcache:1.2.0'
+	compile 'com.zchu:rxcache:1.2.1'
 }
 ```
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 1d6b5b7..a6e980a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,9 +5,9 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
-        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.3'
-        classpath 'com.novoda:bintray-release:+'
+        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
+        classpath 'com.novoda:bintray-release:0.5.0'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
@@ -28,7 +28,7 @@ allprojects {
             links "http://docs.oracle.com/javase/7/docs/api"
         }
     }
-  /*  gradle.projectsEvaluated {
+   /* gradle.projectsEvaluated {
         tasks.withType(JavaCompile) {
             options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation"
         }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 04e285f..25dbf22 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,8 @@
-#Mon Dec 28 10:00:20 PST 2015
+#Sun May 14 17:51:00 CST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-all.zip
+org.gradle.parallel=true
+org.gradle.daemon=true
\ No newline at end of file
diff --git a/rxcache/build.gradle b/rxcache/build.gradle
index 6b20d45..b266e9b 100644
--- a/rxcache/build.gradle
+++ b/rxcache/build.gradle
@@ -8,7 +8,7 @@ android {
     defaultConfig {
         minSdkVersion 11
         targetSdkVersion 24
-        versionCode 1
+        versionCode 4
         versionName "1.2.1"
     }
     buildTypes {
@@ -19,6 +19,7 @@ android {
     }
     lintOptions {
         abortOnError false
+        checkReleaseBuilds false
     }
 
 }