diff --git a/app/build.gradle b/app/build.gradle
index acd14ba86ac620ec2ea9c85d8329c538d211e07b..d8c95953a07d0942cd31b9c452f8bcfaa86057ba 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -43,7 +43,6 @@ android {
 buildscript {
     repositories {
         jcenter()
-        mavenCentral()
     }
     dependencies {
         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
diff --git a/arms/build.gradle b/arms/build.gradle
index 47d21f793d4ec189a5df2317cd855f64d2469855..004dbb979d4898bdf09118f47b14f77df078bc75 100644
--- a/arms/build.gradle
+++ b/arms/build.gradle
@@ -23,7 +23,6 @@ android {
 buildscript {
     repositories {
         jcenter()
-        mavenCentral()
     }
     dependencies {
         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
diff --git a/build.gradle b/build.gradle
index 8c2a2cc0534edaadfd957869ac155785340005b9..32a0999bb00145cbc4596f03836ce5d85549ce28 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
+        classpath 'com.android.tools.build:gradle:2.3.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index d2b21954c4b87c62acb97ee05f5a4094ff62ee0c..e64b3d8465400d7a86d065c9a77e835ac5d90395 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Sep 26 10:57:22 CST 2016
+#Wed Mar 15 10:44:29 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-3.3-all.zip