update versions
diff --git a/.buckversion b/.buckversion
index 6c71d9a..69ef86d 100644
--- a/.buckversion
+++ b/.buckversion
@@ -1 +1 @@
-a4947f4debfe8c3e3bc2bc7fcf0f124bf5d1e880
+47da58f0be8c2b09d843fb58839c85c17db9002f
diff --git a/build.gradle b/build.gradle
index 0aced37..9c2c371 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,9 +4,9 @@
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.1'
+        classpath 'com.android.tools.build:gradle:2.2.2'
         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
-        classpath 'com.uber:okbuck:0.8.1'
+        classpath 'com.uber:okbuck:0.8.4'
         classpath 'com.jakewharton:butterknife-gradle-plugin:8.4.0'
     }
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 8acb20e..2a8af7b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.1-all.zip