diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 0d8f01c..6667ea5 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -1,2 +1,5 @@
 # Scala Steward: Reformat with scalafmt 3.8.4
 ef3e9f47047f2229b40f3a96977ebd50b92eb730
+
+# Scala Steward: Reformat with scalafmt 3.11.2
+4469358ce524a3b8e0d520981990f6a777ae58a2
diff --git a/.scalafmt.conf b/.scalafmt.conf
index 29f7b45..c4cc6c8 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,4 +1,4 @@
-version = "3.8.6"
+version = "3.11.2"
 align.openParenCallSite = true
 align.openParenDefnSite = true
 maxColumn = 120
diff --git a/core/src/main/scala/org/typelevel/paiges/Chunk.scala b/core/src/main/scala/org/typelevel/paiges/Chunk.scala
index afe69b8..c0e77be 100644
--- a/core/src/main/scala/org/typelevel/paiges/Chunk.scala
+++ b/core/src/main/scala/org/typelevel/paiges/Chunk.scala
@@ -66,7 +66,7 @@ private[paiges] object Chunk {
       def hasNext: Boolean = current != ChunkStream.Empty || lineCombiner.nonEmpty
       def next(): String =
         current match {
-          case ChunkStream.Empty => lineCombiner.finalLine()
+          case ChunkStream.Empty      => lineCombiner.finalLine()
           case item: ChunkStream.Item =>
             current = item.step
             lineCombiner.addItem(item).getOrElse(next())
@@ -105,7 +105,7 @@ private[paiges] object Chunk {
     def fits(pos: Int, d: ChunkStream): Boolean =
       (nonNegW >= pos) && {
         d match {
-          case ChunkStream.Empty => true
+          case ChunkStream.Empty      => true
           case item: ChunkStream.Item =>
             item.isLine || fits(item.position, item.step)
         }
diff --git a/core/src/main/scala/org/typelevel/paiges/Doc.scala b/core/src/main/scala/org/typelevel/paiges/Doc.scala
index 46d8eba..06e6784 100644
--- a/core/src/main/scala/org/typelevel/paiges/Doc.scala
+++ b/core/src/main/scala/org/typelevel/paiges/Doc.scala
@@ -243,7 +243,7 @@ sealed abstract class Doc extends Product with Serializable {
             case d1 :: tail => loop(d1, tail)
             case Nil        => true
           }
-        case FlatAlt(a, b) => loop(a, b :: stack)
+        case FlatAlt(a, b)   => loop(a, b :: stack)
         case Concat(_, Line) =>
           false // minor optimization to short circuit sooner
         case Concat(a, Text(s)) =>
@@ -1012,7 +1012,7 @@ object Doc {
       }
 
     ds.toList match {
-      case Nil => empty
+      case Nil     => empty
       case x :: ys =>
         val (xf, xb) = x.flattenBoolean
         // if we don't change, the original doc is the same as flatten
diff --git a/core/src/test/scala/org/typelevel/paiges/PaigesScalacheckTest.scala b/core/src/test/scala/org/typelevel/paiges/PaigesScalacheckTest.scala
index fcdb17b..6839c36 100644
--- a/core/src/test/scala/org/typelevel/paiges/PaigesScalacheckTest.scala
+++ b/core/src/test/scala/org/typelevel/paiges/PaigesScalacheckTest.scala
@@ -386,7 +386,7 @@ class PaigesScalacheckTest extends OurFunSuite {
     def law(d: Doc): Boolean =
       d match {
         case Empty | Text(_) | ZeroWidth(_) | Line => true
-        case FlatAlt(a, b) =>
+        case FlatAlt(a, b)                         =>
           a.maxWidth <= b.maxWidth
         case Concat(a, b) =>
           law(a) && law(b)
@@ -405,7 +405,7 @@ class PaigesScalacheckTest extends OurFunSuite {
     def law(d: Doc): Boolean =
       d match {
         case Empty | Text(_) | ZeroWidth(_) | Line => true
-        case FlatAlt(a, b) =>
+        case FlatAlt(a, b)                         =>
           a !== b
         case Concat(a, b) =>
           law(a) && law(b)
@@ -425,7 +425,7 @@ class PaigesScalacheckTest extends OurFunSuite {
       d match {
         case Empty | Text(_) | ZeroWidth(_) | Line => true
         case FlatAlt(a, b)                         => !isLeft && law(a, isLeft) && law(b, isLeft)
-        case Concat(a, b) =>
+        case Concat(a, b)                          =>
           law(a, isLeft) && law(b, isLeft)
         case Union(a, b) =>
           // we only care about the first parent of a FlatAlt node;
diff --git a/core/src/test/scala/org/typelevel/paiges/PaigesTest.scala b/core/src/test/scala/org/typelevel/paiges/PaigesTest.scala
index 00ccf3e..937fd8b 100644
--- a/core/src/test/scala/org/typelevel/paiges/PaigesTest.scala
+++ b/core/src/test/scala/org/typelevel/paiges/PaigesTest.scala
@@ -53,7 +53,7 @@ object PaigesTest {
     @tailrec
     def loop(stack: List[Doc]): Boolean =
       stack match {
-        case Nil => false
+        case Nil       => false
         case h :: tail =>
           h match {
             case Line                           => true
@@ -89,7 +89,7 @@ object PaigesTest {
   def slowRenderTrim(d: Doc, width: Int): String = {
     val parts = d.render(width).split("\n", -1).toList
     parts match {
-      case Nil => sys.error("unreachable")
+      case Nil   => sys.error("unreachable")
       case other =>
         other
           .map(str => str.reverse.dropWhile(_ == ' ').reverse)
@@ -103,7 +103,7 @@ object PaigesTest {
       case Empty | Text(_) | ZeroWidth(_) | Line => true
       case FlatAlt(a, _)                         => twoRightAssociated(a)
       case Concat(Concat(Concat(_, _), _), _)    => false
-      case Concat(a, b) =>
+      case Concat(a, b)                          =>
         twoRightAssociated(a) && twoRightAssociated(b)
       case Union(a, _)    => twoRightAssociated(a)
       case f @ LazyDoc(_) => twoRightAssociated(f.evaluated)
@@ -116,8 +116,8 @@ object PaigesTest {
   def fillSpec(sep: Doc, ds: List[Doc]): Doc = {
     import Doc._
     ds match {
-      case Nil      => empty
-      case x :: Nil => x.grouped
+      case Nil          => empty
+      case x :: Nil     => x.grouped
       case x :: y :: zs =>
         Union(x.flatten + (sep.flatten + defer(fillSpec(sep, y.flatten :: zs))),
               x + (sep + defer(fillSpec(sep, y :: zs)))