diff --git a/app/build.gradle b/app/build.gradle
index ab540a87..43ed252a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -62,6 +62,10 @@ android {
     }
 }
 
+ext {
+    supportLibVersion = '25.3.1'
+}
+
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
@@ -78,22 +82,22 @@ dependencies {
         transitive = true
     }
 
-    compile 'com.android.support:support-compat:25.3.0'
-    compile 'com.android.support:support-core-utils:25.3.0'
-    compile 'com.android.support:support-core-ui:25.3.0'
-    compile 'com.android.support:support-media-compat:25.3.0'
-    compile 'com.android.support:support-fragment:25.3.0'
-    compile 'com.android.support:support-v13:25.3.0'
-    compile 'com.android.support:appcompat-v7:25.3.0'
-    compile 'com.android.support:recyclerview-v7:25.3.0'
-    compile 'com.android.support:gridlayout-v7:25.3.0'
-    compile 'com.android.support:cardview-v7:25.3.0'
-    compile 'com.android.support:palette-v7:25.3.0'
-    compile 'com.android.support:design:25.3.0'
-    compile 'com.android.support:support-annotations:25.3.0'
-    compile 'com.android.support:percent:25.3.0'
-    compile 'com.android.support:preference-v7:25.3.0'
-    compile 'com.android.support:preference-v14:25.3.0'
+    compile "com.android.support:support-compat:$supportLibVersion"
+    compile "com.android.support:support-core-utils:$supportLibVersion"
+    compile "com.android.support:support-core-ui:$supportLibVersion"
+    compile "com.android.support:support-media-compat:$supportLibVersion"
+    compile "com.android.support:support-fragment:$supportLibVersion"
+    compile "com.android.support:support-v13:$supportLibVersion"
+    compile "com.android.support:appcompat-v7:$supportLibVersion"
+    compile "com.android.support:recyclerview-v7:$supportLibVersion"
+    compile "com.android.support:gridlayout-v7:$supportLibVersion"
+    compile "com.android.support:cardview-v7:$supportLibVersion"
+    compile "com.android.support:palette-v7:$supportLibVersion"
+    compile "com.android.support:design:$supportLibVersion"
+    compile "com.android.support:support-annotations:$supportLibVersion"
+    compile "com.android.support:percent:$supportLibVersion"
+    compile "com.android.support:preference-v7:$supportLibVersion"
+    compile "com.android.support:preference-v14:$supportLibVersion"
 
     compile 'com.afollestad.material-dialogs:core:0.9.4.2@aar'
     compile 'com.afollestad.material-dialogs:commons:0.9.4.2@aar'