diff --git a/build.gradle b/build.gradle
index bb63585..6c566cf 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,11 +24,11 @@ apply plugin: "org.jetbrains.dokka"
 apply plugin: "maven"
 apply plugin: "signing"
 
-sourceCompatibility = 1.7
+sourceCompatibility = 1.8
 
 group = "net.aksingh"
 archivesBaseName = "owm-japis"
-version = "2.5.2.1"
+version = "2.5.2.2"
 
 repositories {
   mavenCentral()
@@ -39,11 +39,11 @@ dependencies {
 
   compile "com.google.code.gson:gson:2.8.2"
 
-  compile "com.squareup.retrofit2:retrofit:2.3.0"
-  compile "com.squareup.retrofit2:converter-gson:2.3.0"
+  compile "com.squareup.retrofit2:retrofit:2.4.0"
+  compile "com.squareup.retrofit2:converter-gson:2.4.0"
 
   compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-  compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+  compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 }
 
 task javadocJar(type: Jar) {
@@ -60,7 +60,7 @@ task dokkaJavadoc(type: org.jetbrains.dokka.gradle.DokkaTask) {
   outputFormat = "javadoc"
   outputDirectory = "$rootDir/docs"
 
-  jdkVersion = 7
+  jdkVersion = 8
   impliedPlatforms = ["JVM"]
 }
 
@@ -140,8 +140,8 @@ uploadArchives {
 }
 
 buildscript {
-  ext.kotlin_version = "1.1.51"
-  ext.dokka_version = "0.9.15"
+  ext.kotlin_version = "1.2.30"
+  ext.dokka_version = "0.9.16"
 
   repositories {
     jcenter()
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 8008488..ef77f50 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -16,8 +16,7 @@
 # DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,   #
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.          #
 ####################################################################################################
-
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.3.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
diff --git a/src/main/kotlin/net/aksingh/owmjapis/core/OWM.kt b/src/main/kotlin/net/aksingh/owmjapis/core/OWM.kt
index 85705fe..cd1c67f 100644
--- a/src/main/kotlin/net/aksingh/owmjapis/core/OWM.kt
+++ b/src/main/kotlin/net/aksingh/owmjapis/core/OWM.kt
@@ -27,6 +27,9 @@ import net.aksingh.owmjapis.util.SystemTools
 import okhttp3.OkHttpClient
 import retrofit2.Retrofit
 import retrofit2.converter.gson.GsonConverterFactory
+import java.net.InetSocketAddress
+import java.net.Proxy
+import java.util.*
 
 
 /**