diff --git a/pom.xml b/pom.xml
index 468cc24..4eb6b46 100644
--- a/pom.xml
+++ b/pom.xml
@@ -14,11 +14,11 @@
     <version>0.3.2-SNAPSHOT</version>
 
     <properties>
-        <kafka.version>0.8.2.1</kafka.version>
+        <kafka.version>0.10.0.0</kafka.version>
         <curator.version>2.8.0</curator.version>
-        <rx.scala.version>0.25.0</rx.scala.version>
+        <rx.scala.version>0.26.2</rx.scala.version>
         <scala.compat.version>2.11</scala.compat.version>
-        <scala.compiler.version>2.11.6</scala.compiler.version>
+        <scala.compiler.version>2.11.8</scala.compiler.version>
     </properties>
 
     <dependencies>
@@ -50,7 +50,7 @@
         <dependency>
             <groupId>org.scalatest</groupId>
             <artifactId>scalatest_${scala.compat.version}</artifactId>
-            <version>2.1.3</version>
+            <version>2.2.6</version>
             <scope>test</scope>
         </dependency>
 
diff --git a/src/test/scala/com/cj/kafka/rx/ProducerRecordTest.scala b/src/test/scala/com/cj/kafka/rx/ProducerRecordTest.scala
index bd5816e..ccea909 100644
--- a/src/test/scala/com/cj/kafka/rx/ProducerRecordTest.scala
+++ b/src/test/scala/com/cj/kafka/rx/ProducerRecordTest.scala
@@ -1,7 +1,8 @@
 package com.cj.kafka.rx
 
-import org.apache.kafka.clients.producer.{ProducerRecord, RecordMetadata, MockProducer}
-import org.scalatest.{Matchers, BeforeAndAfter, FlatSpec}
+import org.apache.kafka.clients.producer.{MockProducer, ProducerRecord}
+import org.apache.kafka.common.serialization.ByteArraySerializer
+import org.scalatest.{BeforeAndAfter, FlatSpec, Matchers}
 import rx.lang.scala.Observable
 
 import scala.collection.JavaConversions._
@@ -23,7 +24,7 @@ class ProducerRecordTest extends FlatSpec with Matchers with BeforeAndAfter {
 
         val messages = urls.map(s => new Record(key = s.getBytes("UTF-8"), value = s.getBytes("UTF-8"), "", 0, 0))
         val stream = Observable.from(messages)
-        val producer = new MockProducer()
+        val producer = new MockProducer(true, new ByteArraySerializer(), new ByteArraySerializer())
 
         def pred(s: String) = s.toLowerCase.contains("/include-me")
 
@@ -55,11 +56,10 @@ class ProducerRecordTest extends FlatSpec with Matchers with BeforeAndAfter {
         ) map { x =>
             x.produce("lol")
         }
-        val fakeProducer = new MockProducer()
+        val fakeProducer = new MockProducer(true, new ByteArraySerializer(), new ByteArraySerializer())
         val result = stream.saveToKafka(fakeProducer).toBlocking.toList
 
         result.last.commit()
         commitWasCalled should be (true)
     }
-
 }
diff --git a/src/test/scala/com/cj/kafka/rx/RxConsumerIntegrationTest.scala b/src/test/scala/com/cj/kafka/rx/RxConsumerIntegrationTest.scala
index a19a9bd..e7b89c0 100644
--- a/src/test/scala/com/cj/kafka/rx/RxConsumerIntegrationTest.scala
+++ b/src/test/scala/com/cj/kafka/rx/RxConsumerIntegrationTest.scala
@@ -6,6 +6,7 @@ import org.apache.curator.framework.CuratorFrameworkFactory
 import org.apache.curator.retry.RetryUntilElapsed
 import org.apache.curator.test.TestingServer
 import org.apache.kafka.clients.producer.MockProducer
+import org.apache.kafka.common.serialization.ByteArraySerializer
 import org.scalatest._
 import rx.lang.scala.subjects.{PublishSubject, ReplaySubject}
 import rx.lang.scala.{Observer, Observable}
@@ -85,7 +86,7 @@ class RxConsumerIntegrationTest extends FlatSpec with ShouldMatchers with Before
 
   it should "deliver messages to a producer" in {
     val fakeStream = Observable.from(getFakeKafkaMessages(10) map { msg => new Record(msg) })
-    val producer = new MockProducer(true)
+    val producer = new MockProducer(true, new ByteArraySerializer(), new ByteArraySerializer())
     val savedMessages = fakeStream.map(_.produce("test-topic")).saveToKafka(producer).toBlocking.toList
     val history = producer.history
     savedMessages.size should be(10)