diff --git a/.scalafmt.conf b/.scalafmt.conf
index d45701aa..785d550d 100644
--- a/.scalafmt.conf
+++ b/.scalafmt.conf
@@ -1,4 +1,4 @@
-version = "2.7.5"
+version = "3.0.0"
 align.preset = none
 maxColumn = 120
 includeNoParensInSelectChains = false
diff --git a/core/src/main/scala-2.12/cats/derived/semiauto.scala b/core/src/main/scala-2.12/cats/derived/semiauto.scala
index 84f3ec56..ed8d0a14 100644
--- a/core/src/main/scala-2.12/cats/derived/semiauto.scala
+++ b/core/src/main/scala-2.12/cats/derived/semiauto.scala
@@ -1,7 +1,7 @@
 package cats.derived
 
-/** allows semi automatically derive each instance. The derivation might need help when
-  * there are fields with a type constructor that comes with instances, e.g.
+/** allows semi automatically derive each instance. The derivation might need help when there are fields with a type
+  * constructor that comes with instances, e.g.
   * {{{
   * scala> case class Bar(a: String)
   * scala> case class Foo(bars: List[Bar])
@@ -25,9 +25,9 @@ package cats.derived
   *   scala> implicit val fooShow: Show[Foo] = { |
   *             import cats.derived.auto.show._  |
   *             cats.derived.semiauto.show       |
-  *          }
-  *  scala> Foo(List(Bar("a"))).show
-  *  res3: String = Foo(bars = List(Bar(a = a)))
+  *           }
+  *   scala> Foo(List(Bar("a"))).show
+  *   res3: String = Foo(bars = List(Bar(a = a)))
   * }}}
   */
 object semiauto extends SemiAutoInstances
diff --git a/core/src/main/scala-2.13/cats/derived/semiauto.scala b/core/src/main/scala-2.13/cats/derived/semiauto.scala
index b096422b..4bc63587 100644
--- a/core/src/main/scala-2.13/cats/derived/semiauto.scala
+++ b/core/src/main/scala-2.13/cats/derived/semiauto.scala
@@ -4,8 +4,8 @@ package derived
 import alleycats.{ConsK, Empty, EmptyK, Pure}
 import cats.kernel.{CommutativeMonoid, CommutativeSemigroup}
 
-/** allows semi automatically derive each instance. The derivation might need help when
-  * there are fields with a type constructor that comes with instances, e.g.
+/** allows semi automatically derive each instance. The derivation might need help when there are fields with a type
+  * constructor that comes with instances, e.g.
   * {{{
   * scala> case class Bar(a: String)
   * scala> case class Foo(bars: List[Bar])
@@ -29,9 +29,9 @@ import cats.kernel.{CommutativeMonoid, CommutativeSemigroup}
   *   scala> implicit val fooShow: Show[Foo] = { |
   *             import cats.derived.auto.show._  |
   *             cats.derived.semiauto.show       |
-  *          }
-  *  scala> Foo(List(Bar("a"))).show
-  *  res3: String = Foo(bars = List(Bar(a = a)))
+  *           }
+  *   scala> Foo(List(Bar("a"))).show
+  *   res3: String = Foo(bars = List(Bar(a = a)))
   * }}}
   */
 object semiauto {
diff --git a/core/src/main/scala/cats/derived/package.scala b/core/src/main/scala/cats/derived/package.scala
index 6ec9fa08..005ad2a9 100644
--- a/core/src/main/scala/cats/derived/package.scala
+++ b/core/src/main/scala/cats/derived/package.scala
@@ -6,9 +6,8 @@ import cats.derived.util.VersionSpecific.Lazy
 import cats.kernel.{CommutativeMonoid, CommutativeSemigroup}
 import shapeless.{Cached, Refute}
 
-/** Fully automatically derive the instance, note that this derivation is not cached, so it
-  * will re-derive every time an instance is needed in the application, which could
-  * significantly impact the compilation time.
+/** Fully automatically derive the instance, note that this derivation is not cached, so it will re-derive every time an
+  * instance is needed in the application, which could significantly impact the compilation time.
   */
 object auto {
 
@@ -277,8 +276,8 @@ object auto {
   }
 }
 
-/** cached cache the derived instance but this cache are global, so be cautious only use it
-  * when there is only one instance globally in your application.
+/** cached cache the derived instance but this cache are global, so be cautious only use it when there is only one
+  * instance globally in your application.
   */
 object cached {
 
@@ -495,8 +494,8 @@ abstract private[derived] class SemiAutoInstances {
   def iterable[F[_], A](fa: F[A])(implicit F: MkIterable[F]): Iterable[A] = F.iterable(fa)
 }
 
-/** allows semi automatically derive each instance. The derivation might need help when
-  * there are fields with a type constructor that comes with instances, e.g.
+/** allows semi automatically derive each instance. The derivation might need help when there are fields with a type
+  * constructor that comes with instances, e.g.
   * {{{
   * scala> case class Bar(a: String)
   * scala> case class Foo(bars: List[Bar])
@@ -520,9 +519,9 @@ abstract private[derived] class SemiAutoInstances {
   *   scala> implicit val fooShow: Show[Foo] = { |
   *             import cats.derived.auto.show._  |
   *             cats.derived.semi.show           |
-  *          }
-  *  scala> Foo(List(Bar("a"))).show
-  *  res3: String = Foo(bars = List(Bar(a = a)))
+  *           }
+  *   scala> Foo(List(Bar("a"))).show
+  *   res3: String = Foo(bars = List(Bar(a = a)))
   * }}}
   */
 @deprecated(message = "Use semiauto instead.", since = "2.1.0")
diff --git a/core/src/main/scala/cats/derived/show.scala b/core/src/main/scala/cats/derived/show.scala
index 1af55e90..0994808f 100644
--- a/core/src/main/scala/cats/derived/show.scala
+++ b/core/src/main/scala/cats/derived/show.scala
@@ -8,16 +8,12 @@ import util.VersionSpecific.{Lazy, OrElse}
 import scala.annotation.implicitNotFound
 import scala.reflect.ClassTag
 
-/** Due to a limitation in the way Shapeless' `describe` is currently
-  * implemented, `Show` can't be derived for ADTs which are _both_
-  * recursive _and_ generic in one or more type parameters.
+/** Due to a limitation in the way Shapeless' `describe` is currently implemented, `Show` can't be derived for ADTs
+  * which are _both_ recursive _and_ generic in one or more type parameters.
   *
-  * See:
-  * https://github.com/typelevel/kittens/pull/48#issue-249836267
-  * https://github.com/milessabin/shapeless/issues/750
+  * See: https://github.com/typelevel/kittens/pull/48#issue-249836267 https://github.com/milessabin/shapeless/issues/750
   *
-  * See the test suite for more precise examples of what can and cannot
-  * be derived.
+  * See the test suite for more precise examples of what can and cannot be derived.
   */
 @implicitNotFound("""Could not derive an instance of Show[A] where A = ${A}.
 Make sure that A satisfies one of the following conditions:
diff --git a/core/src/main/scala/cats/derived/util/liftSome.scala b/core/src/main/scala/cats/derived/util/liftSome.scala
index da63115a..35d59337 100644
--- a/core/src/main/scala/cats/derived/util/liftSome.scala
+++ b/core/src/main/scala/cats/derived/util/liftSome.scala
@@ -18,8 +18,8 @@ package cats.derived.util
 
 import shapeless._
 
-/** Summons all available instances of the typeclass `F` for members of the coproduct `C`.
-  * Unlike `LiftAll` members of the coproduct without an instance will be skipped in the result.
+/** Summons all available instances of the typeclass `F` for members of the coproduct `C`. Unlike `LiftAll` members of
+  * the coproduct without an instance will be skipped in the result.
   */
 sealed trait LiftSome[F[_], C <: Coproduct] extends Serializable {
   type Out <: HList
diff --git a/core/src/test/scala/cats/derived/KittensSuite.scala b/core/src/test/scala/cats/derived/KittensSuite.scala
index 924f256a..0f631bfd 100644
--- a/core/src/test/scala/cats/derived/KittensSuite.scala
+++ b/core/src/test/scala/cats/derived/KittensSuite.scala
@@ -21,10 +21,8 @@ import cats.syntax.AllSyntax
 import munit.DisciplineSuite
 import org.scalacheck.Test.Parameters
 
-/** An opinionated stack of traits to improve consistency and reduce
-  * boilerplate in Kittens tests. Note that unlike the corresponding
-  * CatsSuite in the Cat project, this trait does not mix in any
-  * instances.
+/** An opinionated stack of traits to improve consistency and reduce boilerplate in Kittens tests. Note that unlike the
+  * corresponding CatsSuite in the Cat project, this trait does not mix in any instances.
   */
 abstract class KittensSuite extends DisciplineSuite with AllSyntax {
   override val scalaCheckTestParameters: Parameters = super.scalaCheckTestParameters