diff --git a/app/build.gradle b/app/build.gradle
index 2ba099e..758f9cf 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -25,4 +25,8 @@
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.1'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+
+    // Rx
+    implementation "io.reactivex.rxjava2:rxjava:$rx_java_version"
+    implementation "io.reactivex.rxjava2:rxandroid:$rx_android_version"
 }
diff --git a/build.gradle b/build.gradle
index e6b32bc..5c69c7d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,16 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    
+
+    ext.rx_java_version = '2.1.6'
+    ext.rx_android_version = '2.0.1'
+
     repositories {
         google()
         jcenter()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.0.1'
-        
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files