diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 27230e9..7518c3b 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -1,2 +1,5 @@
 # scalafmt changes
 b128c8a617dfc391b17e0c6422bc07bf4ad9356b
+
+# Scala Steward: Reformat with scalafmt 3.8.4-RC4
+4d04349e2de81bd5f4823e5283961bf07ca3b69e
diff --git a/.scalafmt.conf b/.scalafmt.conf
index 4cc3c4a..1f3b552 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,4 +1,4 @@
-version=3.8.4-RC3
+version=3.8.4-RC4
 assumeStandardLibraryStripMargin = true
 
 align.preset = none
diff --git a/metaconfig-core/shared/src/main/scala/metaconfig/internal/HoconPrinter.scala b/metaconfig-core/shared/src/main/scala/metaconfig/internal/HoconPrinter.scala
index 055cd6d..c54c198 100644
--- a/metaconfig-core/shared/src/main/scala/metaconfig/internal/HoconPrinter.scala
+++ b/metaconfig-core/shared/src/main/scala/metaconfig/internal/HoconPrinter.scala
@@ -36,8 +36,9 @@ object HoconPrinter {
     case Conf.Obj(obj) =>
       val flattened = obj.map { case (k, v) => (k, flatten(v)) }
       val next = flattened.flatMap {
-        case (key, Conf.Obj(nested)) => nested
-            .map { case (k, v) => s"${quote(key)}.$k" -> v }
+        case (key, Conf.Obj(nested)) => nested.map { case (k, v) =>
+            s"${quote(key)}.$k" -> v
+          }
         case (key, value) => (quote(key), value) :: Nil
       }
       Conf.Obj(next)
diff --git a/metaconfig-pprint/shared/src/main/scala-3/metaconfig/pprint/TPrintImpl.scala b/metaconfig-pprint/shared/src/main/scala-3/metaconfig/pprint/TPrintImpl.scala
index 6934f0e..b1e8010 100644
--- a/metaconfig-pprint/shared/src/main/scala-3/metaconfig/pprint/TPrintImpl.scala
+++ b/metaconfig-pprint/shared/src/main/scala-3/metaconfig/pprint/TPrintImpl.scala
@@ -88,9 +88,9 @@ object TPrintLowPri {
     object RefinedType {
       def unapply(tpe: TypeRepr): Option[(TypeRepr, List[(String, TypeRepr)])] =
         tpe match {
-          case Refinement(p, i, b) => unapply(p)
-              .map { case (pp, bs) => (pp, (i -> b) :: bs) }
-              .orElse(Some((p, (i -> b) :: Nil)))
+          case Refinement(p, i, b) => unapply(p).map { case (pp, bs) =>
+              (pp, (i -> b) :: bs)
+            }.orElse(Some((p, (i -> b) :: Nil)))
           case _ => None
         }
     }