diff --git a/app/build.gradle b/app/build.gradle
index 2e30837..5d5a952 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -20,9 +20,9 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.12'
     implementation 'com.android.support:appcompat-v7:27.0.2'
     implementation "io.reactivex.rxjava2:rxandroid:2.0.2"
-    compile project(':lib')
+    implementation project(':lib')
 }
diff --git a/lib/build.gradle b/lib/build.gradle
index 9662b6e..2ff653c 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.2.21'
+    ext.kotlin_version = '1.2.51'
     repositories {
         jcenter()
     }
@@ -16,7 +16,7 @@ group='com.github.oliveiradev'
 
 android {
     compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    buildToolsVersion '28.0.3'
 
     defaultConfig {
         minSdkVersion 14
@@ -44,5 +44,5 @@ dependencies {
     implementation "io.reactivex.rxjava2:rxjava:2.1.9"
     implementation "io.reactivex.rxjava2:rxandroid:2.0.2"
     compileOnly 'com.android.support:appcompat-v7:27.0.2'
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }