diff --git a/build.sbt b/build.sbt
index 80175134..383e520a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -53,10 +53,10 @@ lazy val root = project
 
 val zioVersion                 = "2.0.21"
 val catsVersion                = "2.9.0"
-val catsEffectVersion          = "3.4.8"
+val catsEffectVersion          = "3.5.3"
 val catsMtlVersion             = "1.3.0"
 val disciplineScalaTestVersion = "2.2.0"
-val fs2Version                 = "3.6.1"
+val fs2Version                 = "3.9.4"
 val scalaJavaTimeVersion       = "2.5.0"
 
 lazy val zioInteropTracer = crossProject(JSPlatform, JVMPlatform)
diff --git a/zio-interop-cats-tests/jvm/src/test/scala/zio/interop/fs2StreamSpec.scala b/zio-interop-cats-tests/jvm/src/test/scala/zio/interop/fs2StreamSpec.scala
index 14835ba2..99870c38 100644
--- a/zio-interop-cats-tests/jvm/src/test/scala/zio/interop/fs2StreamSpec.scala
+++ b/zio-interop-cats-tests/jvm/src/test/scala/zio/interop/fs2StreamSpec.scala
@@ -14,7 +14,7 @@ object fs2StreamSpec extends ZIOSpecDefault {
   val exception: Throwable = new Exception("Failed")
 
   def fs2StreamFromChunk[A](chunk: Chunk[A]) =
-    fs2.Stream.chunk[Task, A](fs2.Chunk.indexedSeq(chunk))
+    fs2.Stream.chunk[Task, A](fs2.Chunk.from(chunk))
 
   def assertEqual[A](actual: fs2.Stream[Task, A], expected: fs2.Stream[Task, A]) =
     for {
diff --git a/zio-interop-cats/shared/src/main/scala/zio/stream/interop/FS2StreamSyntax.scala b/zio-interop-cats/shared/src/main/scala/zio/stream/interop/FS2StreamSyntax.scala
index 0da1aa0d..64ded47a 100644
--- a/zio-interop-cats/shared/src/main/scala/zio/stream/interop/FS2StreamSyntax.scala
+++ b/zio-interop-cats/shared/src/main/scala/zio/stream/interop/FS2StreamSyntax.scala
@@ -25,7 +25,7 @@ class ZStreamSyntax[R, E, A](private val stream: ZStream[R, E, A]) extends AnyVa
 
     fs2.Stream.resource(Resource.scopedZIO[R, E, ZIO[R, Option[E], Chunk[A]]](stream.toPull)).flatMap { pull =>
       fs2.Stream.repeatEval(pull.unsome).unNoneTerminate.flatMap { chunk =>
-        fs2.Stream.chunk(fs2.Chunk.indexedSeq(chunk))
+        fs2.Stream.chunk(fs2.Chunk.from(chunk))
       }
     }
   }