diff --git a/.travis.yml b/.travis.yml
index 180d4cb..6367bdb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,8 @@ android:
   components:
     - tools
     - platform-tools
-    - build-tools-23.0.2
-    - android-23
+    - build-tools-28.0.3
+    - android-28
     - extra-google-google_play_services
     - extra-android-m2repository
     - extra-android-support
diff --git a/build.gradle b/build.gradle
index 7d15631..8e9eb58 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,16 @@
 buildscript {
     repositories {
         mavenCentral()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.3.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
     }
 }
 
 allprojects {
     repositories {
         mavenCentral()
+        google()
     }
 }
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index f40b555..d06e471 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.6-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-all.zip
diff --git a/library/build.gradle b/library/build.gradle
index 1918b4d..326e397 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,11 +1,11 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion '23.0.2'
+    compileSdkVersion 28
+    buildToolsVersion '28.0.3'
     defaultConfig {
-        minSdkVersion 9
-        targetSdkVersion 23
+        minSdkVersion 14
+        targetSdkVersion 28
     }
 }
 
diff --git a/sample/build.gradle b/sample/build.gradle
index 740fb6f..43f5d63 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion '23.0.2'
+    compileSdkVersion 28
+    buildToolsVersion '28.0.3'
 
     defaultConfig {
-        minSdkVersion 9
-        targetSdkVersion 23
+        minSdkVersion 14
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
     }
@@ -23,5 +23,5 @@ repositories {
 }
 
 dependencies {
-    compile project(':library')
+    implementation project(':library')
 }
\ No newline at end of file