diff --git a/build.sbt b/build.sbt
index 1785bb5..6c5b2d5 100644
--- a/build.sbt
+++ b/build.sbt
@@ -96,7 +96,7 @@ Global / fileServicePort := {
 }
 
 val catsEffectVersion = "3.5.2"
-val fs2Version = "3.9.3"
+val fs2Version = "3.9.4"
 val http4sVersion = buildinfo.BuildInfo.http4sVersion // share version with build project
 val scalaJSDomVersion = "2.8.0"
 val circeVersion = "0.14.2"