diff --git a/.travis.yml b/.travis.yml
index 809eaf8..e1e5d4a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,11 +13,13 @@ android:
   - tools
   - tools
   - platform-tools
-  - build-tools-24.0.3
-  - android-24
+  - build-tools-26.0.
+  - android-19
+  - android-26
   - extra-google-google_play_services
   - extra-google-m2repository
   - extra-android-m2repository
+  - sys-img-armeabi-v7a-android-19
   licenses:
   - '.+'
 
diff --git a/app/build.gradle b/app/build.gradle
index dc2becc..8e7b1d6 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,12 +4,12 @@ apply from: '../jacoco-android.gradle'
 apply from: "$rootDir/versions.gradle"
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion project.compileSdkVersion
+    buildToolsVersion project.buildToolsVersion
     defaultConfig {
         applicationId "agency.tango.materialintro"
-        minSdkVersion 15
-        targetSdkVersion 25
+        minSdkVersion project.minSdkVersion
+        targetSdkVersion project.targetSdkVersion
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
diff --git a/build.gradle b/build.gradle
index 8a312c7..db55464 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,9 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        maven { url 'https://maven.google.com' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath 'com.android.tools.build:gradle:2.3.3'
 		classpath 'com.novoda:bintray-release:0.3.4'
         classpath 'com.dicedmelon.gradle:jacoco-android:0.1.1'
         classpath 'com.palantir:jacoco-coverage:0.4.0'
@@ -17,6 +18,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        maven { url 'https://maven.google.com' }
     }
 
     tasks.withType(Javadoc) {
diff --git a/material-intro-screen/build.gradle b/material-intro-screen/build.gradle
index 2302f22..157a28f 100644
--- a/material-intro-screen/build.gradle
+++ b/material-intro-screen/build.gradle
@@ -4,13 +4,13 @@ apply from: '../jacoco-android.gradle'
 
 apply from: "$rootDir/versions.gradle"
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion project.compileSdkVersion
+    buildToolsVersion project.buildToolsVersion
         resourcePrefix 'mis_'
 
     defaultConfig {
-        minSdkVersion 15
-        targetSdkVersion 25
+        minSdkVersion project.minSdkVersion
+        targetSdkVersion project.targetSdkVersion
         versionCode 1
         versionName "1.0"
 
diff --git a/material-intro-screen/src/main/res/layout-land/mis_fragment_slide.xml b/material-intro-screen/src/main/res/layout-land/mis_fragment_slide.xml
index ddbe0e0..4e66dc0 100644
--- a/material-intro-screen/src/main/res/layout-land/mis_fragment_slide.xml
+++ b/material-intro-screen/src/main/res/layout-land/mis_fragment_slide.xml
@@ -39,7 +39,6 @@
             android:layout_height="wrap_content"
             android:gravity="center"
             android:textAppearance="@style/TextAppearance.AppCompat.Headline"
-            app:mis_layout_parallaxFactor="0.5"
             tools:text="Lorem ipsum" />
 
         <TextView
@@ -48,7 +47,6 @@
             android:layout_height="wrap_content"
             android:gravity="center"
             android:textAppearance="@style/TextAppearance.AppCompat.Subhead"
-            app:mis_layout_parallaxFactor="0.2"
             tools:text="Lorem ipsum dolor sit amet, consectetur, adipisci velit, …" />
 
     </LinearLayout>
diff --git a/material-intro-screen/src/main/res/values/styles.xml b/material-intro-screen/src/main/res/values/styles.xml
index 9f37492..0addbdc 100644
--- a/material-intro-screen/src/main/res/values/styles.xml
+++ b/material-intro-screen/src/main/res/values/styles.xml
@@ -6,7 +6,7 @@
         <item name="android:windowIsTranslucent">true</item>
     </style>
 
-    <style name="ColoredButton" parent="Widget.AppCompat.Button.Colored" tools:ignore="ResourceName">
+    <style name="Widget.ColoredButton" parent="Widget.AppCompat.Button.Colored" tools:ignore="ResourceName">
         <item name="colorButtonNormal">@android:color/white</item>
         <item name="android:textColor">@android:color/black</item>
     </style>
diff --git a/versions.gradle b/versions.gradle
index f3aab11..99b5173 100644
--- a/versions.gradle
+++ b/versions.gradle
@@ -1 +1,6 @@
-ext.androidSupport = "25.1.1"
+ext.minSdkVersion = 21
+ext.targetSdkVersion = 25
+ext.compileSdkVersion = 26
+ext.buildToolsVersion = '26.0.1'
+ext.androidSupport = "26.1.0"
+