diff --git a/build.sbt b/build.sbt
index d89c428..28ccac8 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,12 +1,12 @@
 name := "spark-tests"
 
-version := "2.3.0-SNAPSHOT"
+version := "2.3.0"
 
 deps ++= Seq(
   paths % "1.3.1",
   scalatest,
   spark,
-  spark_util % "2.0.0-SNAPSHOT",
+  spark_util % "2.0.0",
   testUtils
 )
 
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 686674b..48597a1 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1 +1 @@
-addSbtPlugin("org.hammerlab" % "sbt-parent" % "3.1.1")
+addSbtPlugin("org.hammerlab" % "sbt-parent" % "3.3.0")
diff --git a/src/main/scala/org/hammerlab/spark/test/suite/KryoSparkSuite.scala b/src/main/scala/org/hammerlab/spark/test/suite/KryoSparkSuite.scala
index bfba002..f97417b 100644
--- a/src/main/scala/org/hammerlab/spark/test/suite/KryoSparkSuite.scala
+++ b/src/main/scala/org/hammerlab/spark/test/suite/KryoSparkSuite.scala
@@ -1,8 +1,6 @@
 package org.hammerlab.spark.test.suite
 
-import org.apache.spark.serializer.KryoRegistrator
-import org.hammerlab.kryo.spark.Registrator
-import org.hammerlab.spark.confs
+import org.hammerlab.spark.SelfRegistrar
 
 /**
  * Base for test-suites that rely on Kryo serialization, including registering classes for serialization in a
@@ -11,7 +9,4 @@ import org.hammerlab.spark.confs
 class KryoSparkSuite(override val registrationRequired: Boolean = true,
                      override val referenceTracking: Boolean = false)
   extends SparkSuite
-    with Registrator
-    with confs.Kryo {
-  override def registrar: Class[_ <: KryoRegistrator] = getClass
-}
+    with SelfRegistrar
diff --git a/src/main/scala/org/hammerlab/spark/test/suite/MainSuite.scala b/src/main/scala/org/hammerlab/spark/test/suite/MainSuite.scala
index a065d66..bb1d2c1 100644
--- a/src/main/scala/org/hammerlab/spark/test/suite/MainSuite.scala
+++ b/src/main/scala/org/hammerlab/spark/test/suite/MainSuite.scala
@@ -2,7 +2,6 @@ package org.hammerlab.spark.test.suite
 
 import java.lang.System.{ clearProperty, getProperty, setProperty }
 
-import org.apache.spark.serializer.KryoRegistrator
 import org.hammerlab.spark.{ SparkConfBase, confs }
 import org.hammerlab.test.Suite
 
@@ -14,7 +13,7 @@ import scala.collection.mutable
  *
  * Sets Spark configuration settings, including Kryo-serde with required registration, through system properties.
  */
-class MainSuite(override val registrar: Class[_ <: KryoRegistrator] = null)
+class MainSuite
   extends Suite
     with SparkConfBase
     with TestConfs
diff --git a/src/main/scala/org/hammerlab/spark/test/suite/SparkSuite.scala b/src/main/scala/org/hammerlab/spark/test/suite/SparkSuite.scala
index 7b4847d..65b2ca2 100644
--- a/src/main/scala/org/hammerlab/spark/test/suite/SparkSuite.scala
+++ b/src/main/scala/org/hammerlab/spark/test/suite/SparkSuite.scala
@@ -5,7 +5,7 @@ import org.hammerlab.test.Suite
 /**
  * Base for test suites that shar one [[org.apache.spark.SparkContext]] across all test cases.
  */
-trait SparkSuite
+abstract class SparkSuite
   extends Suite
     with SparkSuiteBase {
 
diff --git a/src/test/scala/org/hammerlab/spark/test/suite/KryoSparkSuiteTest.scala b/src/test/scala/org/hammerlab/spark/test/suite/KryoSparkSuiteTest.scala
index 88c1ded..19adf81 100644
--- a/src/test/scala/org/hammerlab/spark/test/suite/KryoSparkSuiteTest.scala
+++ b/src/test/scala/org/hammerlab/spark/test/suite/KryoSparkSuiteTest.scala
@@ -3,6 +3,7 @@ package org.hammerlab.spark.test.suite
 import com.esotericsoftware.kryo.io.{ Input, Output }
 import com.esotericsoftware.kryo.{ Kryo, Serializer }
 import org.apache.spark.SparkException
+import org.hammerlab.kryo._
 
 import scala.collection.mutable
 
@@ -11,10 +12,9 @@ class KryoSparkSuiteTest
     with SparkSerialization {
 
   register(
-    classOf[mutable.WrappedArray.ofRef[_]],
-    classOf[Foo] → new FooSerializer,
-    classOf[Array[Foo]],
-    classOf[Bar]
+    cls[mutable.WrappedArray.ofRef[_]],
+    arr[Foo],
+    cls[Bar]
   )
 
   test("spark job custom serializer") {
@@ -35,11 +35,14 @@ class KryoSparkSuiteTest
 
 case class Foo(n: Int, s: String)
 
-case class FooException() extends Exception
-
-class FooSerializer extends Serializer[Foo] {
-  override def write(kryo: Kryo, output: Output, `object`: Foo): Unit = throw FooException()
-  override def read(kryo: Kryo, input: Input, `type`: Class[Foo]): Foo = ???
+object Foo {
+  implicit val serializer: Serializer[Foo] =
+    new Serializer[Foo] {
+      override def write(kryo: Kryo, out: Output, foo: Foo): Unit = throw FooException()
+      override def read(kryo: Kryo, in: Input, cls: Class[Foo]): Foo = ???
+    }
 }
 
+case class FooException() extends Exception
+
 case class Bar(n: Int, s: String)