diff --git a/project/build.scala b/project/build.scala
index 69bc304..61db306 100644
--- a/project/build.scala
+++ b/project/build.scala
@@ -25,6 +25,7 @@
         Classpaths.typesafeReleases,
         "amateras-repo" at "http://amateras.sourceforge.jp/mvn/"
       ),
+      scalacOptions := Seq("-deprecation"),
       libraryDependencies ++= Seq(
         "org.eclipse.jgit" % "org.eclipse.jgit.http.server" % "3.0.0.201306101825-r",
         "org.scalatra" %% "scalatra" % ScalatraVersion,
diff --git a/src/main/scala/service/WebHookService.scala b/src/main/scala/service/WebHookService.scala
index fa81d19..7ddaa11 100644
--- a/src/main/scala/service/WebHookService.scala
+++ b/src/main/scala/service/WebHookService.scala
@@ -34,7 +34,7 @@
     import org.json4s.jackson.Serialization
     import org.json4s.jackson.Serialization.{read, write}
     import org.apache.http.client.methods.HttpPost
-    import org.apache.http.impl.client.DefaultHttpClient
+    import org.apache.http.impl.client.HttpClientBuilder
     import scala.concurrent._
     import ExecutionContext.Implicits.global
 
@@ -43,7 +43,7 @@
 
     if(webHookURLs.nonEmpty){
       val json = write(payload)
-      val httpClient = new DefaultHttpClient()
+      val httpClient = HttpClientBuilder.create.build
 
       webHookURLs.foreach { webHookUrl =>
         val f = future {