Update json4s-native to 4.0.5 (#2519)

3 files changed, 3 insertions, 3 deletions

diff --git a/build.sbt b/build.sbt
index 1272900b..10ccdb75 100644
--- a/build.sbt
+++ b/build.sbt
@@ -33,7 +33,7 @@ lazy val firrtlSettings = Seq(
     "org.scalatestplus" %% "scalacheck-1-15" % "3.2.11.0" % "test",
     "com.github.scopt" %% "scopt" % "3.7.1",
     "net.jcazevedo" %% "moultingyaml" % "0.4.2",
-    "org.json4s" %% "json4s-native" % "3.6.12",
+    "org.json4s" %% "json4s-native" % "4.0.5",
     "org.apache.commons" % "commons-text" % "1.9",
     "io.github.alexarchambault" %% "data-class" % "0.2.5",
     "com.lihaoyi" %% "os-lib" % "0.8.1"
diff --git a/build.sc b/build.sc
index 9b551792..74a05a1e 100644
--- a/build.sc
+++ b/build.sc
@@ -47,7 +47,7 @@ class firrtlCrossModule(val crossScalaVersion: String)
       ivy"${scalaOrganization()}:scala-reflect:${scalaVersion()}",
       ivy"com.github.scopt::scopt:3.7.1",
       ivy"net.jcazevedo::moultingyaml:0.4.2",
-      ivy"org.json4s::json4s-native:3.6.12",
+      ivy"org.json4s::json4s-native:4.0.5",
       ivy"org.apache.commons:commons-text:1.9",
       ivy"io.github.alexarchambault::data-class:0.2.5",
       ivy"org.antlr:antlr4-runtime:$antlr4Version",
diff --git a/src/main/scala/firrtl/annotations/JsonProtocol.scala b/src/main/scala/firrtl/annotations/JsonProtocol.scala
index 24ebc781..fe35c77d 100644
--- a/src/main/scala/firrtl/annotations/JsonProtocol.scala
+++ b/src/main/scala/firrtl/annotations/JsonProtocol.scala
@@ -223,7 +223,7 @@ object JsonProtocol extends LazyLogging {
 
   /** Construct Json formatter for annotations */
   def jsonFormat(tags: Seq[Class[_]]) = {
-    Serialization.formats(FullTypeHints(tags.toList)).withTypeHintFieldName("class") +
+    Serialization.formats(FullTypeHints(tags.toList, "class")) +
       new TransformClassSerializer + new NamedSerializer + new CircuitNameSerializer +
       new ModuleNameSerializer + new ComponentNameSerializer + new TargetSerializer +
       new GenericTargetSerializer + new CircuitTargetSerializer + new ModuleTargetSerializer +