diff --git a/benchmark/build.sbt b/benchmark/build.sbt
index 6baca0a1..eb9fe66a 100644
--- a/benchmark/build.sbt
+++ b/benchmark/build.sbt
@@ -6,8 +6,8 @@ libraryDependencies ++= {
   if (scalaBinaryVersion.value.startsWith("2.12"))
     Seq(
       "io.argonaut" %% "argonaut" % "6.3.8",
-      "org.json4s" %% "json4s-native" % "4.0.3",
-      "org.json4s" %% "json4s-jackson" % "4.0.3",
+      "org.json4s" %% "json4s-native" % "4.0.4",
+      "org.json4s" %% "json4s-jackson" % "4.0.4",
       "com.typesafe.play" %% "play-json" % "2.9.2",
       "com.rojoma" %% "rojoma-json" % "2.4.3",
       "com.rojoma" %% "rojoma-json-v3" % "3.14.0",