diff --git a/build.sbt b/build.sbt
index 43037d9..e7339d4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -77,7 +77,7 @@ lazy val runtime = Project(id = gyremockRuntimeName, base = file("runtime"))
       "com.lightbend.akka.grpc" %% "akka-grpc-runtime" % akkaGrpcVersion,
       "com.typesafe.akka" %% "akka-actor" % "2.6.20",
       "com.typesafe.akka" %% "akka-http-core" % "10.2.9",
-      "com.thesamet.scalapb" %% "scalapb-json4s" % "0.11.1",
+      "com.thesamet.scalapb" %% "scalapb-json4s" % "0.12.1",
       "com.typesafe.scala-logging" %% "scala-logging" % "3.9.2",
       "org.wiremock" % "wiremock" % "3.3.1",
       "org.scalatest" %% "scalatest" % "3.1.0" % Test