diff --git a/app/build.gradle b/app/build.gradle
index 774be4c0..5ec34ab8 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -3,6 +3,7 @@ apply plugin: 'me.tatarka.retrolambda'
 apply plugin: "com.neenbedankt.android-apt"
 apply plugin: 'com.siimkinks.sqlitemagic'
 apply plugin: 'com.google.firebase.firebase-crash'
+apply plugin: 'com.github.ben-manes.versions'
 
 android {
     signingConfigs {
@@ -85,6 +86,9 @@ repositories {
 
 dependencies {
     ext {
+        butterKnifeVersion = '8.5.1'
+        icepickVersion = '3.2.0'
+        lombokVersion = '1.12.6'
         supportVerion = "25.2.0"
         firebase = "10.2.0"
         thirtyinchVersion = '0.8.0-rc2'
@@ -107,8 +111,8 @@ dependencies {
     compile 'com.firebase:firebase-jobdispatcher:0.5.2'
     compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
     compile 'de.hdodenhof:circleimageview:2.1.0'
-    compile 'com.jakewharton:butterknife:8.4.0'
-    compile 'frankiesardo:icepick:3.1.0'
+    compile "frankiesardo:icepick:${icepickVersion}"
+    compile "com.jakewharton:butterknife:${butterKnifeVersion}"
     compile 'it.sephiroth.android.library.bottomnavigation:bottom-navigation:2.0.1-rc1'
     compile 'io.reactivex:rxandroid:1.2.1'
     compile 'io.reactivex:rxjava:1.2.2'
@@ -118,10 +122,10 @@ dependencies {
     compile 'uk.co.samuelwall:material-tap-target-prompt:1.9.2'
     compile 'com.github.k0shk0sh:RetainedDateTimePickers:1.0.2'
     compile 'com.zzhoujay.markdown:markdown:1.0.4'
-    apt 'org.projectlombok:lombok:1.12.6'
-    apt 'frankiesardo:icepick-processor:3.1.0'
-    apt 'com.jakewharton:butterknife-compiler:8.4.0'
-    provided 'org.projectlombok:lombok:1.12.6'
+    apt "org.projectlombok:lombok:${lombokVersion}"
+    apt "frankiesardo:icepick-processor:${icepickVersion}"
+    apt "com.jakewharton:butterknife-compiler:${butterKnifeVersion}"
+    provided "org.projectlombok:lombok:${lombokVersion}"
 }
 
-apply plugin: "com.google.gms.google-services"
\ No newline at end of file
+apply plugin: "com.google.gms.google-services"
diff --git a/build.gradle b/build.gradle
index b07403a7..3f801898 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,6 +13,7 @@ buildscript {
         classpath 'me.tatarka.retrolambda.projectlombok:lombok.ast:0.2.3.a2'
         classpath 'com.siimkinks.sqlitemagic:sqlitemagic-plugin:0.11.0'
         classpath 'com.google.firebase:firebase-plugins:1.0.5'
+        classpath 'com.github.ben-manes:gradle-versions-plugin:0.14.0'
     }
     configurations.classpath.exclude group: 'com.android.tools.external.lombok'
 }