diff --git a/build.gradle b/build.gradle
index eccf45d..8a67314 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.0.0'
+        classpath 'com.android.tools.build:gradle:2.3.0'
         classpath 'com.novoda:bintray-release:0.3.4'
     }
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index c27087b..c422226 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +1,6 @@
-#Wed Apr 10 15:27:10 PDT 2013
+#Fri Mar 17 06:53:45 JST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.12-all.zip
-
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
diff --git a/transformations/build.gradle b/transformations/build.gradle
index db3e91a..56a4038 100644
--- a/transformations/build.gradle
+++ b/transformations/build.gradle
@@ -20,26 +20,6 @@ dependencies {
   provided "jp.co.cyberagent.android.gpuimage:gpuimage-library:${GPUIMAGE_VERSION}"
 }
 
-task androidJavadocs(type: Javadoc) {
-  source = android.sourceSets.main.java.srcDirs
-  classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
-}
-
-task androidJavadocsJar(type: Jar, dependsOn: androidJavadocs) {
-  classifier = 'javadoc'
-  from androidJavadocs.destinationDir
-}
-
-task androidSourcesJar(type: Jar) {
-  classifier = 'sources'
-  from android.sourceSets.main.java.srcDirs
-}
-
-artifacts {
-  archives androidSourcesJar
-  archives androidJavadocsJar
-}
-
 publish {
   userOrg = POM_DEVELOPER_ID
   groupId = GROUP
@@ -47,4 +27,7 @@ publish {
   publishVersion = VERSION_NAME
   desc = POM_DESCRIPTION
   website = POM_URL
+  bintrayUser = BINTRAY_USER
+  bintrayKey = BINTRAY_API_KEY
+  autoPublish = false
 }