diff --git a/android_app/app/build.gradle b/android_app/app/build.gradle
index d50a65a0..c8e85636 100644
--- a/android_app/app/build.gradle
+++ b/android_app/app/build.gradle
@@ -2,7 +2,6 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 24
-    buildToolsVersion '25.0.2'
 
     defaultConfig {
         applicationId "com.health.openscale"
diff --git a/android_app/build.gradle b/android_app/build.gradle
index 8674409c..e4467f8e 100644
--- a/android_app/build.gradle
+++ b/android_app/build.gradle
@@ -4,7 +4,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'com.android.tools.build:gradle:3.0.1'
     }
 }
 
diff --git a/android_app/gradle/wrapper/gradle-wrapper.properties b/android_app/gradle/wrapper/gradle-wrapper.properties
index 91103397..4910d789 100644
--- a/android_app/gradle/wrapper/gradle-wrapper.properties
+++ b/android_app/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sun Mar 05 12:16:00 CET 2017
+#Mon Nov 20 21:08:22 CET 2017
 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-4.1-all.zip