diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 2f67bb9921e1c8dc9aa12e2a0b5212a8bbe2c599..f2b79d9ed84c0250f973413bf85242d31d3fb33f 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -133,6 +133,8 @@ object SparkBuild extends Build {
       "colt" % "colt" % "1.2.0",
       "cc.spray" % "spray-can" % "1.0-M2.1",
       "cc.spray" % "spray-server" % "1.0-M2.1",
+      "cc.spray" %%  "spray-json" % "1.1.1",
+      "io.spray" %%  "spray-json" % "1.2.3",
       "org.apache.mesos" % "mesos" % "0.9.0-incubating"
     ) ++ (if (HADOOP_MAJOR_VERSION == "2") Some("org.apache.hadoop" % "hadoop-client" % HADOOP_VERSION) else None).toSeq,
     unmanagedSourceDirectories in Compile <+= baseDirectory{ _ / ("src/hadoop" + HADOOP_MAJOR_VERSION + "/scala") }