diff --git a/app/com/linkedin/drelephant/spark/fetchers/SparkLogClient.scala b/app/com/linkedin/drelephant/spark/fetchers/SparkLogClient.scala
index 90a2eb9a2..2bdefa15c 100644
--- a/app/com/linkedin/drelephant/spark/fetchers/SparkLogClient.scala
+++ b/app/com/linkedin/drelephant/spark/fetchers/SparkLogClient.scala
@@ -19,8 +19,7 @@ package com.linkedin.drelephant.spark.fetchers
 import java.io.InputStream
 import java.security.PrivilegedAction
 
-import scala.async.Async
-import scala.concurrent.{ExecutionContext, Future}
+import scala.concurrent.{ExecutionContext, Future, blocking}
 import scala.io.Source
 
 import com.linkedin.drelephant.security.HadoopSecurity
@@ -39,7 +38,6 @@ import org.json4s.jackson.JsonMethods
   */
 class SparkLogClient(hadoopConfiguration: Configuration, sparkConf: SparkConf, eventLogUri: Option[String]) {
   import SparkLogClient._
-  import Async.async
 
   private val logger: Logger = Logger.getLogger(classOf[SparkLogClient])
 
@@ -64,8 +62,9 @@ class SparkLogClient(hadoopConfiguration: Configuration, sparkConf: SparkConf, e
     val (eventLogPath, eventLogCodec) =
       sparkUtils.pathAndCodecforEventLog(sparkConf, eventLogFileSystem, baseEventLogPath, appId, attemptId)
 
-    async {
-      sparkUtils.withEventLog(eventLogFileSystem, eventLogPath, eventLogCodec)(findDerivedData(_))
+    Future { blocking {
+        sparkUtils.withEventLog(eventLogFileSystem, eventLogPath, eventLogCodec)(findDerivedData(_))
+      }
     }
   }
 }
diff --git a/app/com/linkedin/drelephant/spark/fetchers/SparkRestClient.scala b/app/com/linkedin/drelephant/spark/fetchers/SparkRestClient.scala
index 7a39454cd..04233868d 100644
--- a/app/com/linkedin/drelephant/spark/fetchers/SparkRestClient.scala
+++ b/app/com/linkedin/drelephant/spark/fetchers/SparkRestClient.scala
@@ -79,7 +79,6 @@ class SparkRestClient(sparkConf: SparkConf) {
   ): Future[SparkRestDerivedData] = {
     val (applicationInfo, attemptTarget) = getApplicationMetaData(appId)
 
-    // Limit the scope of async.
     Future {
       blocking {
         val futureJobDatas = Future {
@@ -140,8 +139,6 @@ class SparkRestClient(sparkConf: SparkConf) {
 
     val applicationInfo = getApplicationInfo(appTarget)
 
-    // These are pure and cannot fail, therefore it is safe to have
-    // them outside of the async block.
     val lastAttemptId = applicationInfo.attempts.maxBy {
       _.startTime
     }.attemptId
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index acf786ff5..4afa41f9e 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -90,10 +90,9 @@ object Dependencies {
     "io.dropwizard.metrics" % "metrics-healthchecks" % "3.1.2",
     "org.mockito" % "mockito-core" % "1.10.19" exclude ("org.hamcrest", "hamcrest-core"),
     "org.jmockit" % "jmockit" % "1.23" % Test,
-    "org.scala-lang.modules" %% "scala-async" % "0.9.5",
     "org.apache.httpcomponents" % "httpclient" % "4.5.2",
     "org.apache.httpcomponents" % "httpcore" % "4.4.4",
-    "org.scalatest" %% "scalatest" % "3.0.0" % Test, 
+    "org.scalatest" %% "scalatest" % "3.0.0" % Test,
     "com.h2database" % "h2" % "1.4.196" % Test
 
   ) :+ sparkExclusion