diff --git a/build.sbt b/build.sbt
index be70ab1..c396235 100644
--- a/build.sbt
+++ b/build.sbt
@@ -23,7 +23,7 @@ ThisBuild / Test / javaOptions += "-Dcom.linecorp.armeria.verboseResponses=true
 val versions = new {
   val armeria = "1.30.1"
   val fs2 = "3.11.0"
-  val http4s = "1.0.0-M42"
+  val http4s = "1.0.0-M43"
   val log4cats = "2.7.0"
   val logback = "1.2.13"
   val micrometer = "1.9.2"