diff --git a/android/build.gradle b/android/build.gradle
index 121e31c..52c9f6d 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -5,7 +5,6 @@ apply from: '../gradle/publishing.gradle'
 dependencies {
     compile libraries.os
     compile libraries.kotlinStd
-    compile libraries.kotlinRuntime
     compile libraries.kotlinReflect
     compile libraries.rxJava
 }
diff --git a/build.gradle b/build.gradle
index f1b0ec1..db77884 100644
--- a/build.gradle
+++ b/build.gradle
@@ -11,7 +11,7 @@ buildscript {
 
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$versions.kotlin"
-        classpath 'com.github.ben-manes:gradle-versions-plugin:0.13.0'
+        classpath 'com.github.ben-manes:gradle-versions-plugin:0.20.0'
         classpath "org.junit.platform:junit-platform-gradle-plugin:$versions.junitPlatform"
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
     }
diff --git a/ci/build.sh b/ci/build.sh
index e19b061..d27492b 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -38,7 +38,7 @@ docker run \
 --env BINTRAY_GPG_PASSPHRASE="$BINTRAY_GPG_PASSPHRASE" \
 --volume `"pwd"`:/opt/project \
 --rm \
-openjdk:8u121-jdk \
+openjdk:8u181-jdk \
 bash -c "$BUILD_COMMAND"
 
 popd
diff --git a/dependencies.gradle b/dependencies.gradle
index df836f1..6e4f1c5 100644
--- a/dependencies.gradle
+++ b/dependencies.gradle
@@ -1,14 +1,14 @@
 ext.versions = [
-        kotlin           : '1.1.1',
+        kotlin           : '1.3.21',
 
-        rxJava           : '1.2.9',
-        jCommander       : '1.66',
-        apacheCommonsIo  : '2.5',
-        apacheCommonsLang: '3.5',
+        rxJava           : '1.3.8',
+        jCommander       : '1.71',
+        apacheCommonsIo  : '2.6',
+        apacheCommonsLang: '3.8.1',
 
         junit            : '4.12',
-        junitPlatform    : '1.0.0-M3',
-        spek             : '1.1.0',
+        junitPlatform    : '1.0.0',
+        spek             : '1.1.5',
         assertJ          : '3.5.2',
 ]
 
@@ -17,7 +17,6 @@ ext.libraries = [
         android                : project(':android'),
 
         kotlinStd              : "org.jetbrains.kotlin:kotlin-stdlib:$versions.kotlin",
-        kotlinRuntime          : "org.jetbrains.kotlin:kotlin-runtime:$versions.kotlin",
         kotlinReflect          : "org.jetbrains.kotlin:kotlin-reflect:$versions.kotlin",
 
         rxJava                 : "io.reactivex:rxjava:$versions.rxJava",
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 2b265cc..91ca28c 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 59105ec..16d2805 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 05 19:47:52 MSK 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4-bin.zip
diff --git a/gradlew b/gradlew
index 4453cce..cccdd3d 100755
--- a/gradlew
+++ b/gradlew
@@ -33,11 +33,11 @@ DEFAULT_JVM_OPTS=""
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -155,7 +155,7 @@ if $cygwin ; then
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
diff --git a/os/build.gradle b/os/build.gradle
index 18ffc5f..75791e1 100644
--- a/os/build.gradle
+++ b/os/build.gradle
@@ -4,7 +4,6 @@ apply from: '../gradle/publishing.gradle'
 
 dependencies {
     compile libraries.kotlinStd
-    compile libraries.kotlinRuntime
     compile libraries.kotlinReflect
     compile libraries.rxJava
 }