diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index add2810..1375db0 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -3,3 +3,6 @@
 
 # Scala Steward: Reformat with scalafmt 3.8.6
 12ea712573e8e3e8b26a9c3bb69ad0e921b8cfbb
+
+# Scala Steward: Reformat with scalafmt 3.9.10
+d1b8f7f477c742c2190ca28187e7a34e8f94685a
diff --git a/.scalafmt.conf b/.scalafmt.conf
index 463060b..4d62805 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,2 +1,2 @@
-version = 3.8.6
+version = 3.9.10
 runner.dialect = "scala213source3"
\ No newline at end of file
diff --git a/build.sbt b/build.sbt
index d959d88..7f16f81 100644
--- a/build.sbt
+++ b/build.sbt
@@ -31,7 +31,7 @@ def commonSettings(jdk: Int) = Seq(
   libraryDependencies ++=
     (CrossVersion.partialVersion(scalaVersion.value) match {
       case Some((3, _)) => Seq.empty
-      case _ =>
+      case _            =>
         Seq(
           compilerPlugin(
             "org.typelevel" % "kind-projector" % "0.13.3" cross CrossVersion.full
diff --git a/prox-core/src/main/scala/io/github/vigoo/prox/runner.scala b/prox-core/src/main/scala/io/github/vigoo/prox/runner.scala
index 9327222..999e55c 100644
--- a/prox-core/src/main/scala/io/github/vigoo/prox/runner.scala
+++ b/prox-core/src/main/scala/io/github/vigoo/prox/runner.scala
@@ -305,8 +305,8 @@ trait ProcessRunnerModule {
         nativeProcess: JvmProcess
     ): ProxIO[Unit] = {
       process.inputRedirection match {
-        case StdIn()      => unit
-        case InputFile(_) => unit
+        case StdIn()                          => unit
+        case InputFile(_)                     => unit
         case InputStream(stream, flushChunks) =>
           drainToJavaOutputStream(
             stream,
@@ -346,7 +346,7 @@ trait ProcessRunnerModule {
       outputRedirection match {
         case StdOut()                => ProcessBuilder.Redirect.INHERIT
         case OutputFile(path, false) => ProcessBuilder.Redirect.to(path.toFile)
-        case OutputFile(path, true) =>
+        case OutputFile(path, true)  =>
           ProcessBuilder.Redirect.appendTo(path.toFile)
         case OutputStreamThroughPipe(_, _, _) => ProcessBuilder.Redirect.PIPE
         case OutputStreamToSink(_, _)         => ProcessBuilder.Redirect.PIPE
diff --git a/prox-fs2-3/src/main/scala/io/github/vigoo/prox/ProxFS2.scala b/prox-fs2-3/src/main/scala/io/github/vigoo/prox/ProxFS2.scala
index 9bf8557..3097bc0 100644
--- a/prox-fs2-3/src/main/scala/io/github/vigoo/prox/ProxFS2.scala
+++ b/prox-fs2-3/src/main/scala/io/github/vigoo/prox/ProxFS2.scala
@@ -73,7 +73,7 @@ trait ProxFS2[F[_]] extends Prox {
       acquire: ProxIO[A]
   )(use: A => ProxIO[B])(fin: (A, IOResult) => ProxIO[Unit]): ProxIO[B] =
     Sync[F](instances).bracketCase(acquire)(use) {
-      case (value, Outcome.Succeeded(_)) => fin(value, Completed)
+      case (value, Outcome.Succeeded(_))   => fin(value, Completed)
       case (value, Outcome.Errored(error)) =>
         fin(value, Failed(List(UnknownProxError(error))))
       case (value, Outcome.Canceled()) => fin(value, Canceled)