diff --git a/build.sbt b/build.sbt
index 363e014..c33a295 100644
--- a/build.sbt
+++ b/build.sbt
@@ -58,7 +58,7 @@ ThisBuild / githubWorkflowBuildPostamble ++= Seq(
 val smithyVersion = "1.73.0"
 val alloyVersion = "0.3.40"
 val smithy4sVersion = "0.19.8"
-val smithy4sNdjsonVersion = "0.2.1"
+val smithy4sNdjsonVersion = "0.3.1"
 
 val commonSettings = Seq(
   scalacOptions ++= Seq(