diff --git a/README.md b/README.md
index ff7346b..86fdb58 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,16 @@ Navigation tab bar with colorful interactions.
 
 You can check the sample app [here](https://github.com/DevLight-Mobile-Agency/NavigationTabBar/tree/master/app).
 
+Warn
+====
+```
+This library is not more supported. 
+If you want to add new feature or fix a bug, grab source code and do it. 
+If you think your fix or feature would be useful to other developers, 
+I can add link of your repository to this README file. 
+Thank you for using our libraries.
+```
+
 Download
 ========
 
@@ -321,6 +331,10 @@ Xamarin
 Thanks to [Martijn van Dijk](https://github.com/martijn00) for developing Xamarin bindings library for [NavigationTabBar](https://github.com/martijn00/NavigationTabBarXamarin).  
 Plugin is available on [Nuget](https://www.nuget.org/packages/Xam.Plugins.Android.NavigationTabBar/).
 
+## use navbar using materialize css
+navbar using materialize css is really easy and would take just assigning right classes to the html tags and it would create a navigation tab bar using its prewritten css and js files. This can be easily used in html pages using downloaded files or cdn links...
+https://materializecss.com/navbar.html
+
 Credits
 =======
 
diff --git a/app/build.gradle b/app/build.gradle
index e7df12d..146f017 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
 
     defaultConfig {
         applicationId "devlight.io.navigationtabbar"
-        minSdkVersion 11
-        targetSdkVersion 25
+        minSdkVersion 14
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
     }
@@ -24,11 +24,11 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile project(':navigationtabbar')
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation project(':navigationtabbar')
 //    compile 'com.github.devlight.navigationtabbar:navigationtabbar:1.2.3'
 
-    compile 'com.android.support:appcompat-v7:25.3.1'
-    compile 'com.android.support:design:25.3.1'
-    compile 'com.android.support:support-v4:25.3.1'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support:design:27.1.1'
+    implementation 'com.android.support:support-v4:27.1.1'
 }
diff --git a/build.gradle b/build.gradle
index ea0055f..69bfa21 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,16 +3,18 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
-        classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:1.1"
-        classpath 'com.android.tools.build:gradle:2.3.2'
+        classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3"
+        classpath 'com.android.tools.build:gradle:3.1.2'
     }
 }
 
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a73d6cf..9072f5b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Jun 01 22:46:13 EEST 2017
+#Fri Apr 27 03:13:54 BRT 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/navigationtabbar/build.gradle b/navigationtabbar/build.gradle
index c8d6fdf..04d0b47 100644
--- a/navigationtabbar/build.gradle
+++ b/navigationtabbar/build.gradle
@@ -22,12 +22,12 @@ apply plugin: 'maven'
 version = "1.2.5"
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
 
     defaultConfig {
-        minSdkVersion 11
-        targetSdkVersion 25
+        minSdkVersion 14
+        targetSdkVersion 27
         versionCode 1
         versionName "1.2.5"
     }
@@ -40,9 +40,9 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
     //noinspection GradleDependency
-    compile 'com.android.support:design:25.3.1'
+    implementation 'com.android.support:design:27.1.1'
 }
 
 def siteUrl = 'https://github.com/DevLight-Mobile-Agency/NavigationTabBar'