diff --git a/app/build.gradle b/app/build.gradle
index 57747250fb1773ce33317ca8c491c44ce625ac34..1e1c8c5d563de41413b7f0bcb705d83eb90fdb72 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -39,7 +39,7 @@ def getManifestVersionName() {
 
 android {
     compileSdkVersion 19
-    buildToolsVersion '22.0.1'
+    buildToolsVersion '21.1.2'
 
     defaultConfig {
         minSdkVersion 16
@@ -128,8 +128,8 @@ dependencies {
     //    compile 'com.github.amlcurran.showcaseview:library:5.0.0'
     compile fileTree(dir: 'libs', include: '*.jar')
     compile project(':third_party:rootshell')
-    compile 'com.android.support:support-v4:22.1.1'
-    compile 'com.android.support:appcompat-v7:22.1.1'
+    compile 'com.android.support:support-v4:19.1.0'
+    //compile 'com.android.support:appcompat-v7:22.1.1'
     compile 'org.osmdroid:osmdroid-android:4.2'
     //https://github.com/lp0/slf4j-android
     compile 'org.slf4j:slf4j-api:1.7.12'