diff --git a/build.sbt b/build.sbt
index 876a3b4..bea093d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,11 +7,11 @@ scalaVersion := "2.10.4"
 
 
 libraryDependencies ++= Seq(
-  "org.apache.spark" %% "spark-core" % "1.2.0" withSources() withJavadoc(),
-  "org.apache.spark" %% "spark-sql" % "1.2.0" withSources() withJavadoc(),
-  "org.apache.spark" %% "spark-streaming" % "1.2.0" withSources() withJavadoc(),
-  "org.apache.spark" %% "spark-streaming-twitter" % "1.2.0" withSources() withJavadoc(),
-  "com.datastax.spark" %% "spark-cassandra-connector" % "1.2.0-alpha1" withSources() withJavadoc(),
+  "org.apache.spark" %% "spark-core" % "1.2.1" withSources() withJavadoc(),
+  "org.apache.spark" %% "spark-sql" % "1.2.1" withSources() withJavadoc(),
+  "org.apache.spark" %% "spark-streaming" % "1.2.1" withSources() withJavadoc(),
+  "org.apache.spark" %% "spark-streaming-twitter" % "1.2.1" withSources() withJavadoc(),
+  "com.datastax.spark" %% "spark-cassandra-connector" % "1.2.0-rc3" withSources() withJavadoc(),
   "com.github.nscala-time" %% "nscala-time" % "1.6.0" withSources() withJavadoc()
 )