diff --git a/core/pom.xml b/core/pom.xml
index dfadd22d4214b4283765a857bf0e89f10bd57290..73426a9ec58e9285c678028cec2c81d66645a711 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -90,10 +90,6 @@
       <groupId>org.scala-lang</groupId>
       <artifactId>scala-library</artifactId>
     </dependency>
-    <dependency>
-      <groupId>net.liftweb</groupId>
-      <artifactId>lift-json_2.9.2</artifactId>
-    </dependency>
     <dependency>
       <groupId>it.unimi.dsi</groupId>
       <artifactId>fastutil</artifactId>
diff --git a/core/src/main/scala/spark/deploy/JsonProtocol.scala b/core/src/main/scala/spark/deploy/JsonProtocol.scala
index bd1db7c29402ce42aca9fad2facfb5dc179a0aac..6b71b953dd782947b2bbc61fadb85bd51fc7078a 100644
--- a/core/src/main/scala/spark/deploy/JsonProtocol.scala
+++ b/core/src/main/scala/spark/deploy/JsonProtocol.scala
@@ -17,7 +17,7 @@
 
 package spark.deploy
 
-import net.liftweb.json.JsonDSL._
+import scala.util.parsing.json.{JSONArray, JSONObject, JSONType}
 
 import spark.deploy.DeployMessages.{MasterStateResponse, WorkerStateResponse}
 import spark.deploy.master.{ApplicationInfo, WorkerInfo}
@@ -25,61 +25,63 @@ import spark.deploy.worker.ExecutorRunner
 
 
 private[spark] object JsonProtocol {
- def writeWorkerInfo(obj: WorkerInfo) = {
-   ("id" -> obj.id) ~
-   ("host" -> obj.host) ~
-   ("port" -> obj.port) ~
-   ("webuiaddress" -> obj.webUiAddress) ~
-   ("cores" -> obj.cores) ~
-   ("coresused" -> obj.coresUsed) ~
-   ("memory" -> obj.memory) ~
-   ("memoryused" -> obj.memoryUsed)
- }
 
-  def writeApplicationInfo(obj: ApplicationInfo) = {
-    ("starttime" -> obj.startTime) ~
-    ("id" -> obj.id) ~
-    ("name" -> obj.desc.name) ~
-    ("cores" -> obj.desc.maxCores) ~
-    ("user" ->  obj.desc.user) ~
-    ("memoryperslave" -> obj.desc.memoryPerSlave) ~
-    ("submitdate" -> obj.submitDate.toString)
-  }
+  def writeWorkerInfo(obj: WorkerInfo): JSONType = JSONObject(Map(
+    "id" -> obj.id,
+    "host" -> obj.host,
+    "port" -> obj.port,
+    "webuiaddress" -> obj.webUiAddress,
+    "cores" -> obj.cores,
+    "coresused" -> obj.coresUsed,
+    "memory" -> obj.memory,
+    "memoryused" -> obj.memoryUsed,
+    "state" -> obj.state.toString
+  ))
 
-  def writeApplicationDescription(obj: ApplicationDescription) = {
-    ("name" -> obj.name) ~
-    ("cores" -> obj.maxCores) ~
-    ("memoryperslave" -> obj.memoryPerSlave) ~
-    ("user" -> obj.user)
-  }
+  def writeApplicationInfo(obj: ApplicationInfo): JSONType = JSONObject(Map(
+    "starttime" -> obj.startTime,
+    "id" -> obj.id,
+    "name" -> obj.desc.name,
+    "cores" -> obj.desc.maxCores,
+    "user" ->  obj.desc.user,
+    "memoryperslave" -> obj.desc.memoryPerSlave,
+    "submitdate" -> obj.submitDate.toString
+  ))
 
-  def writeExecutorRunner(obj: ExecutorRunner) = {
-    ("id" -> obj.execId) ~
-    ("memory" -> obj.memory) ~
-    ("appid" -> obj.appId) ~
-    ("appdesc" -> writeApplicationDescription(obj.appDesc))
-  }
+  def writeApplicationDescription(obj: ApplicationDescription): JSONType = JSONObject(Map(
+    "name" -> obj.name,
+    "cores" -> obj.maxCores,
+    "memoryperslave" -> obj.memoryPerSlave,
+    "user" -> obj.user
+  ))
 
-  def writeMasterState(obj: MasterStateResponse) = {
-    ("url" -> ("spark://" + obj.uri)) ~
-    ("workers" -> obj.workers.toList.map(writeWorkerInfo)) ~
-    ("cores" -> obj.workers.map(_.cores).sum) ~
-    ("coresused" -> obj.workers.map(_.coresUsed).sum) ~
-    ("memory" -> obj.workers.map(_.memory).sum) ~
-    ("memoryused" -> obj.workers.map(_.memoryUsed).sum) ~
-    ("activeapps" -> obj.activeApps.toList.map(writeApplicationInfo)) ~
-    ("completedapps" -> obj.completedApps.toList.map(writeApplicationInfo))
-  }
+  def writeExecutorRunner(obj: ExecutorRunner): JSONType = JSONObject(Map(
+    "id" -> obj.execId,
+    "memory" -> obj.memory,
+    "appid" -> obj.appId,
+    "appdesc" -> writeApplicationDescription(obj.appDesc)
+  ))
 
-  def writeWorkerState(obj: WorkerStateResponse) = {
-    ("id" -> obj.workerId) ~
-    ("masterurl" -> obj.masterUrl) ~
-    ("masterwebuiurl" -> obj.masterWebUiUrl) ~
-    ("cores" -> obj.cores) ~
-    ("coresused" -> obj.coresUsed) ~
-    ("memory" -> obj.memory) ~
-    ("memoryused" -> obj.memoryUsed) ~
-    ("executors" -> obj.executors.toList.map(writeExecutorRunner)) ~
-    ("finishedexecutors" -> obj.finishedExecutors.toList.map(writeExecutorRunner))
-  }
+  def writeMasterState(obj: MasterStateResponse): JSONType = JSONObject(Map(
+    "url" -> ("spark://" + obj.uri),
+    "workers" -> obj.workers.toList.map(writeWorkerInfo),
+    "cores" -> obj.workers.map(_.cores).sum,
+    "coresused" -> obj.workers.map(_.coresUsed).sum,
+    "memory" -> obj.workers.map(_.memory).sum,
+    "memoryused" -> obj.workers.map(_.memoryUsed).sum,
+    "activeapps" -> JSONArray(obj.activeApps.toList.map(writeApplicationInfo)),
+    "completedapps" -> JSONArray(obj.completedApps.toList.map(writeApplicationInfo))
+  ))
+
+  def writeWorkerState(obj: WorkerStateResponse): JSONType = JSONObject(Map(
+    "id" -> obj.workerId,
+    "masterurl" -> obj.masterUrl,
+    "masterwebuiurl" -> obj.masterWebUiUrl,
+    "cores" -> obj.cores,
+    "coresused" -> obj.coresUsed,
+    "memory" -> obj.memory,
+    "memoryused" -> obj.memoryUsed,
+    "executors" -> JSONArray(obj.executors.toList.map(writeExecutorRunner)),
+    "finishedexecutors" -> JSONArray(obj.finishedExecutors.toList.map(writeExecutorRunner))
+  ))
 }
diff --git a/core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala b/core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala
index 405a1ec3a60cafc50fa548c609fb6729fa9bb6f7..494a9b914d753ffe2d814f4fc2dea3aa673bcf1e 100644
--- a/core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala
+++ b/core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala
@@ -17,6 +17,7 @@
 
 package spark.deploy.master.ui
 
+import scala.util.parsing.json.JSONType
 import scala.xml.Node
 
 import akka.dispatch.Await
@@ -25,8 +26,6 @@ import akka.util.duration._
 
 import javax.servlet.http.HttpServletRequest
 
-import net.liftweb.json.JsonAST.JValue
-
 import spark.deploy.DeployMessages.{MasterStateResponse, RequestMasterState}
 import spark.deploy.JsonProtocol
 import spark.deploy.master.ExecutorInfo
@@ -37,7 +36,7 @@ private[spark] class ApplicationPage(parent: MasterWebUI) {
   implicit val timeout = parent.timeout
 
   /** Executor details for a particular application */
-  def renderJson(request: HttpServletRequest): JValue = {
+  def renderJson(request: HttpServletRequest): JSONType = {
     val appId = request.getParameter("appId")
     val stateFuture = (master ? RequestMasterState)(timeout).mapTo[MasterStateResponse]
     val state = Await.result(stateFuture, 30 seconds)
diff --git a/core/src/main/scala/spark/deploy/master/ui/IndexPage.scala b/core/src/main/scala/spark/deploy/master/ui/IndexPage.scala
index 2000211b983df44cfac5a27dd34cc7157c53ecba..28e421e3bc1c60278bfb7cc9f56050a346257a39 100644
--- a/core/src/main/scala/spark/deploy/master/ui/IndexPage.scala
+++ b/core/src/main/scala/spark/deploy/master/ui/IndexPage.scala
@@ -19,14 +19,13 @@ package spark.deploy.master.ui
 
 import javax.servlet.http.HttpServletRequest
 
+import scala.util.parsing.json.JSONType
 import scala.xml.Node
 
 import akka.dispatch.Await
 import akka.pattern.ask
 import akka.util.duration._
 
-import net.liftweb.json.JsonAST.JValue
-
 import spark.Utils
 import spark.deploy.DeployWebUI
 import spark.deploy.DeployMessages.{MasterStateResponse, RequestMasterState}
@@ -38,7 +37,7 @@ private[spark] class IndexPage(parent: MasterWebUI) {
   val master = parent.masterActorRef
   implicit val timeout = parent.timeout
 
-  def renderJson(request: HttpServletRequest): JValue = {
+  def renderJson(request: HttpServletRequest): JSONType = {
     val stateFuture = (master ? RequestMasterState)(timeout).mapTo[MasterStateResponse]
     val state = Await.result(stateFuture, 30 seconds)
     JsonProtocol.writeMasterState(state)
diff --git a/core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala b/core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala
index b67059068bf1bac92f9295a144ed072734f10858..02993d58a0ab1d4af240f79954de70acff0c41b3 100644
--- a/core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala
+++ b/core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala
@@ -19,14 +19,13 @@ package spark.deploy.worker.ui
 
 import javax.servlet.http.HttpServletRequest
 
+import scala.util.parsing.json.JSONType
 import scala.xml.Node
 
 import akka.dispatch.Await
 import akka.pattern.ask
 import akka.util.duration._
 
-import net.liftweb.json.JsonAST.JValue
-
 import spark.Utils
 import spark.deploy.JsonProtocol
 import spark.deploy.DeployMessages.{RequestWorkerState, WorkerStateResponse}
@@ -39,7 +38,7 @@ private[spark] class IndexPage(parent: WorkerWebUI) {
   val worker = parent.worker
   val timeout = parent.timeout
 
-  def renderJson(request: HttpServletRequest): JValue = {
+  def renderJson(request: HttpServletRequest): JSONType = {
     val stateFuture = (workerActor ? RequestWorkerState)(timeout).mapTo[WorkerStateResponse]
     val workerState = Await.result(stateFuture, 30 seconds)
     JsonProtocol.writeWorkerState(workerState)
diff --git a/core/src/main/scala/spark/ui/JettyUtils.scala b/core/src/main/scala/spark/ui/JettyUtils.scala
index f66fe39905228e3167dabf33a1ab87740e7c01f5..ba58f3572991517157bc0f7548069404bd1143fd 100644
--- a/core/src/main/scala/spark/ui/JettyUtils.scala
+++ b/core/src/main/scala/spark/ui/JettyUtils.scala
@@ -21,10 +21,9 @@ import javax.servlet.http.{HttpServletResponse, HttpServletRequest}
 
 import scala.annotation.tailrec
 import scala.util.{Try, Success, Failure}
+import scala.util.parsing.json.JSONType
 import scala.xml.Node
 
-import net.liftweb.json.{JValue, pretty, render}
-
 import org.eclipse.jetty.server.{Server, Request, Handler}
 import org.eclipse.jetty.server.handler.{ResourceHandler, HandlerList, ContextHandler, AbstractHandler}
 import org.eclipse.jetty.util.thread.QueuedThreadPool
@@ -39,8 +38,8 @@ private[spark] object JettyUtils extends Logging {
   type Responder[T] = HttpServletRequest => T
 
   // Conversions from various types of Responder's to jetty Handlers
-  implicit def jsonResponderToHandler(responder: Responder[JValue]): Handler =
-    createHandler(responder, "text/json", (in: JValue) => pretty(render(in)))
+  implicit def jsonResponderToHandler(responder: Responder[JSONType]): Handler =
+    createHandler(responder, "text/json", (in: JSONType) => in.toString)
 
   implicit def htmlResponderToHandler(responder: Responder[Seq[Node]]): Handler =
     createHandler(responder, "text/html", (in: Seq[Node]) => "<!DOCTYPE html>" + in.toString)
diff --git a/pom.xml b/pom.xml
index 7e6d38df9f96d6e567128faf2eb0b8f466c1419b..1811c62b55af83803398dcb2176e6ed018190ed2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -254,11 +254,6 @@
         <version>10.4.2.0</version>
         <scope>test</scope>
       </dependency>
-      <dependency>
-        <groupId>net.liftweb</groupId>
-        <artifactId>lift-json_2.9.2</artifactId>
-        <version>2.5</version>
-      </dependency>
       <dependency>
         <groupId>com.codahale.metrics</groupId>
         <artifactId>metrics-core</artifactId>
diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index f6519c8287447f62f781faaa44aeada3b3ab4a87..852f40d3fd6e6b390e6ad1e84383f5b8796c3d83 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -180,7 +180,6 @@ object SparkBuild extends Build {
       "com.typesafe.akka" % "akka-slf4j" % "2.0.5" excludeAll(excludeNetty),
       "it.unimi.dsi" % "fastutil" % "6.4.4",
       "colt" % "colt" % "1.2.0",
-      "net.liftweb" % "lift-json_2.9.2" % "2.5",
       "org.apache.mesos" % "mesos" % "0.12.1",
       "io.netty" % "netty-all" % "4.0.0.Beta2",
       "org.apache.derby" % "derby" % "10.4.2.0" % "test",