diff --git a/build.gradle b/build.gradle
index 79adf58..c806e79 100644
--- a/build.gradle
+++ b/build.gradle
@@ -11,7 +11,7 @@ buildscript {
 
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$versions.kotlin"
-        classpath 'com.github.ben-manes:gradle-versions-plugin:0.13.0'
+        classpath 'com.github.ben-manes:gradle-versions-plugin:0.17.0'
         classpath "org.junit.platform:junit-platform-gradle-plugin:$versions.junitPlatform"
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
     }
diff --git a/dependencies.gradle b/dependencies.gradle
index 1e9d0af..5b768c5 100644
--- a/dependencies.gradle
+++ b/dependencies.gradle
@@ -1,15 +1,15 @@
 ext.versions = [
-        kotlin       : '1.1.1',
+        kotlin       : '1.2.41',
 
-        rxJava       : '1.2.9',
+        rxJava       : '1.3.8',
         jCommander   : '1.71',
-        commander    : '0.1.1',
+        commander    : '0.1.7',
 
         junit        : '4.12',
-        junitPlatform: '1.0.0-M4',
-        spek         : '1.1.2',
-        assertJ      : '3.5.2',
-        mockito      : '2.8.9',
+        junitPlatform: '1.0.1',
+        spek         : '1.1.5',
+        assertJ      : '3.9.1',
+        mockito      : '2.8.1',
         mockitoKotlin: '1.5.0',
 ]
 
@@ -25,7 +25,6 @@ ext.libraries = [
 
         junit                  : "junit:junit:$versions.junit",
         spek                   : "org.jetbrains.spek:spek-api:$versions.spek",
-        spekSubjectExtension   : "org.jetbrains.spek:spek-subject-extension:$versions.spek",
         spekJunitPlatformEngine: "org.jetbrains.spek:spek-junit-platform-engine:$versions.spek",
         assertJ                : "org.assertj:assertj-core:$versions.assertJ",
         mockito                : "org.mockito:mockito-core:$versions.mockito",
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 59105ec..e4ccb30 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-3.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip
diff --git a/swarmer/build.gradle b/swarmer/build.gradle
index e65e6c0..a20f835 100644
--- a/swarmer/build.gradle
+++ b/swarmer/build.gradle
@@ -17,7 +17,6 @@ dependencies {
 
 dependencies {
     testCompile libraries.spek
-    testCompile libraries.spekSubjectExtension
     testRuntime libraries.spekJunitPlatformEngine
     testCompile libraries.assertJ
     testCompile libraries.mockito
diff --git a/swarmer/src/test/kotlin/com/gojuno/swarmer/EmulatorsSpec.kt b/swarmer/src/test/kotlin/com/gojuno/swarmer/EmulatorsSpec.kt
index 250e468..dc28b24 100644
--- a/swarmer/src/test/kotlin/com/gojuno/swarmer/EmulatorsSpec.kt
+++ b/swarmer/src/test/kotlin/com/gojuno/swarmer/EmulatorsSpec.kt
@@ -3,7 +3,11 @@ package com.gojuno.swarmer
 import com.gojuno.commander.android.AdbDevice
 import com.gojuno.commander.android.adb
 import com.gojuno.commander.os.Notification
-import com.nhaarman.mockito_kotlin.*
+import com.nhaarman.mockito_kotlin.any
+import com.nhaarman.mockito_kotlin.argumentCaptor
+import com.nhaarman.mockito_kotlin.mock
+import com.nhaarman.mockito_kotlin.verify
+import com.nhaarman.mockito_kotlin.whenever
 import org.jetbrains.spek.api.Spek
 import org.jetbrains.spek.api.dsl.describe
 import org.jetbrains.spek.api.dsl.it
@@ -16,9 +20,9 @@ import java.util.concurrent.TimeUnit
 class EmulatorsSpec : Spek({
 
     val ADB_DEVICES = setOf(
-            AdbDevice("id1", true),
-            AdbDevice("id2", true),
-            AdbDevice("id3", true)
+            AdbDevice("id1", online = true),
+            AdbDevice("id2", online = true),
+            AdbDevice("id3", online = true)
     )
 
     arrayOf(