diff --git a/app/build.gradle b/app/build.gradle
index dbe8c850a..30140d182 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -46,14 +46,13 @@ dependencies {
   compile 'eu.mhutti1.utils.storage:android-storage-devices:0.6.2'
 
   // Android Support
-  compile 'com.android.support:appcompat-v7:25.3.1'
-  compile 'com.android.support:support-v13:25.3.1'
-  compile 'com.android.support:support-v4:25.3.1'
-  compile 'com.android.support:design:25.3.1'
-  compile 'com.android.support:cardview-v7:25.3.1'
-
+  compile "com.android.support:appcompat-v7:$supportLibraryVersion"
+  compile "com.android.support:support-v13:$supportLibraryVersion"
+  compile "com.android.support:support-v4:$supportLibraryVersion"
+  compile "com.android.support:design:$supportLibraryVersion"
+  compile "com.android.support:cardview-v7:$supportLibraryVersion"
   compile 'com.android.support:multidex:1.0.1'
-  compile 'com.android.support.test:runner:1.0.0'
+
 
   androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.2'
 
@@ -70,7 +69,7 @@ dependencies {
     exclude group: 'com.android.support', module: 'recyclerview-v7'
   }
 
-  androidTestCompile 'com.android.support:support-annotations:25.3.1'
+  androidTestCompile "com.android.support:support-annotations:$supportLibraryVersion"
   androidTestCompile 'com.android.support.test:runner:1.0.0'
   androidTestCompile 'com.android.support.test:rules:1.0.0'
 
diff --git a/build.gradle b/build.gradle
index a9b5e4f7b..4747d8be8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,6 +14,9 @@ buildscript {
   }
 }
 
+ext {
+    supportLibraryVersion = '25.4.0'
+}
 
 allprojects {
     repositories {