Update gradle dependencies

Change-Id: Ied647eda448943f44fb1ce43f8984474c2342551
diff --git a/app/build.gradle b/app/build.gradle
index a2694a8..8789739 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,7 +2,7 @@
 
 android {
     compileSdkVersion 25
-    buildToolsVersion "23.0.3"
+    buildToolsVersion "25.0.2"
 
     lintOptions {
         checkReleaseBuilds false
@@ -54,4 +54,4 @@
     dependencies {
         testCompile 'junit:junit:4.12'
     }
-}
\ No newline at end of file
+}