diff --git a/internal/util-cache/src/test/scala/CacheSpec.scala b/internal/util-cache/src/test/scala/CacheSpec.scala
index 7b9924b6e..a3b0dd5e1 100644
--- a/internal/util-cache/src/test/scala/CacheSpec.scala
+++ b/internal/util-cache/src/test/scala/CacheSpec.scala
@@ -6,13 +6,13 @@ import sbt.io.syntax._
 import CacheImplicits._
 
 import sjsonnew.IsoString
-import sjsonnew.support.scalajson.unsafe.{ CompactPrinter, Converter, FixedParser }
+import sjsonnew.support.scalajson.unsafe.{ CompactPrinter, Converter, Parser }
 
 import scala.json.ast.unsafe.JValue
 
 class CacheSpec extends UnitSpec {
 
-  implicit val isoString: IsoString[JValue] = IsoString.iso(CompactPrinter.apply, FixedParser.parseUnsafe)
+  implicit val isoString: IsoString[JValue] = IsoString.iso(CompactPrinter.apply, Parser.parseUnsafe)
 
   "A cache" should "NOT throw an exception if read without being written previously" in {
     testCache[String, Int] {
diff --git a/internal/util-cache/src/test/scala/SingletonCacheSpec.scala b/internal/util-cache/src/test/scala/SingletonCacheSpec.scala
index 42c774a2f..da883d446 100644
--- a/internal/util-cache/src/test/scala/SingletonCacheSpec.scala
+++ b/internal/util-cache/src/test/scala/SingletonCacheSpec.scala
@@ -6,7 +6,7 @@ import sbt.io.syntax._
 import CacheImplicits._
 
 import sjsonnew.{ Builder, deserializationError, IsoString, JsonFormat, Unbuilder }
-import sjsonnew.support.scalajson.unsafe.{ CompactPrinter, Converter, FixedParser }
+import sjsonnew.support.scalajson.unsafe.{ CompactPrinter, Converter, Parser }
 
 import scala.json.ast.unsafe.JValue
 
@@ -41,7 +41,7 @@ class SingletonCacheSpec extends UnitSpec {
       }
   }
 
-  implicit val isoString: IsoString[JValue] = IsoString.iso(CompactPrinter.apply, FixedParser.parseUnsafe)
+  implicit val isoString: IsoString[JValue] = IsoString.iso(CompactPrinter.apply, Parser.parseUnsafe)
 
   "A singleton cache" should "throw an exception if read without being written previously" in {
     testCache[Int] {
diff --git a/internal/util-cache/src/test/scala/sjsonnew/support/scalajson/unsafe/FixedParser.scala b/internal/util-cache/src/test/scala/sjsonnew/support/scalajson/unsafe/FixedParser.scala
deleted file mode 100644
index 7f9f759dc..000000000
--- a/internal/util-cache/src/test/scala/sjsonnew/support/scalajson/unsafe/FixedParser.scala
+++ /dev/null
@@ -1,29 +0,0 @@
-package sjsonnew
-package support.scalajson.unsafe
-
-import scala.json.ast.unsafe._
-import scala.collection.mutable
-import jawn.{ SupportParser, MutableFacade }
-
-object FixedParser extends SupportParser[JValue] {
-  implicit val facade: MutableFacade[JValue] =
-    new MutableFacade[JValue] {
-      def jnull() = JNull
-      def jfalse() = JTrue
-      def jtrue() = JFalse
-      def jnum(s: String) = JNumber(s)
-      def jint(s: String) = JNumber(s)
-      def jstring(s: String) = JString(s)
-      def jarray(vs: mutable.ArrayBuffer[JValue]) = JArray(vs.toArray)
-      def jobject(vs: mutable.Map[String, JValue]) = {
-        val array = new Array[JField](vs.size)
-        var i = 0
-        vs.foreach {
-          case (key, value) =>
-            array(i) = JField(key, value)
-            i += 1
-        }
-        JObject(array)
-      }
-    }
-}
\ No newline at end of file
diff --git a/internal/util-tracking/src/test/scala/sbt/internal/util/TrackedSpec.scala b/internal/util-tracking/src/test/scala/sbt/internal/util/TrackedSpec.scala
index 3c38a2c4a..df23ae8e7 100644
--- a/internal/util-tracking/src/test/scala/sbt/internal/util/TrackedSpec.scala
+++ b/internal/util-tracking/src/test/scala/sbt/internal/util/TrackedSpec.scala
@@ -6,13 +6,13 @@ import sbt.io.syntax._
 import CacheImplicits._
 
 import sjsonnew.IsoString
-import sjsonnew.support.scalajson.unsafe.{ CompactPrinter, Converter, FixedParser }
+import sjsonnew.support.scalajson.unsafe.{ CompactPrinter, Converter, Parser }
 
 import scala.json.ast.unsafe.JValue
 
 class TrackedSpec extends UnitSpec {
 
-  implicit val isoString: IsoString[JValue] = IsoString.iso(CompactPrinter.apply, FixedParser.parseUnsafe)
+  implicit val isoString: IsoString[JValue] = IsoString.iso(CompactPrinter.apply, Parser.parseUnsafe)
 
   "lastOutput" should "store the last output" in {
     withStore { store =>
diff --git a/internal/util-tracking/src/test/scala/sjsonnew/support/scalajson/unsafe/FixedParser.scala b/internal/util-tracking/src/test/scala/sjsonnew/support/scalajson/unsafe/FixedParser.scala
deleted file mode 100644
index 7f9f759dc..000000000
--- a/internal/util-tracking/src/test/scala/sjsonnew/support/scalajson/unsafe/FixedParser.scala
+++ /dev/null
@@ -1,29 +0,0 @@
-package sjsonnew
-package support.scalajson.unsafe
-
-import scala.json.ast.unsafe._
-import scala.collection.mutable
-import jawn.{ SupportParser, MutableFacade }
-
-object FixedParser extends SupportParser[JValue] {
-  implicit val facade: MutableFacade[JValue] =
-    new MutableFacade[JValue] {
-      def jnull() = JNull
-      def jfalse() = JTrue
-      def jtrue() = JFalse
-      def jnum(s: String) = JNumber(s)
-      def jint(s: String) = JNumber(s)
-      def jstring(s: String) = JString(s)
-      def jarray(vs: mutable.ArrayBuffer[JValue]) = JArray(vs.toArray)
-      def jobject(vs: mutable.Map[String, JValue]) = {
-        val array = new Array[JField](vs.size)
-        var i = 0
-        vs.foreach {
-          case (key, value) =>
-            array(i) = JField(key, value)
-            i += 1
-        }
-        JObject(array)
-      }
-    }
-}
\ No newline at end of file
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 8be45ba91..18e4189c4 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -26,7 +26,7 @@ object Dependencies {
 
   lazy val parserCombinator211 = "org.scala-lang.modules" %% "scala-parser-combinators" % "1.0.4"
 
-  lazy val sjsonnewVersion = "0.4.1"
+  lazy val sjsonnewVersion = "0.4.2"
   lazy val sjsonnew = "com.eed3si9n" %% "sjson-new-core" % sjsonnewVersion
   lazy val sjsonnewScalaJson = "com.eed3si9n" %% "sjson-new-scalajson" % sjsonnewVersion
 }