diff --git a/server/src/main/scala/dashing/server/Parallel1.scala b/server/src/main/scala/dashing/server/Parallel1.scala
deleted file mode 100644
index 6dbf614..0000000
--- a/server/src/main/scala/dashing/server/Parallel1.scala
+++ /dev/null
@@ -1,23 +0,0 @@
-package dashing.server
-
-import cats.Parallel
-
-// taken from https://github.com/typelevel/cats/issues/2233
-
-sealed trait Parallel1[F[_]] extends Serializable {
-  type A[_]
-  def parallel: Parallel[F, A]
-}
-
-object Parallel1 {
-  type Aux[F[_], A0[_]] = Parallel1[F] { type A[x] = A0[x] }
-
-  implicit def parallel1Instance[F[_], A0[_]](implicit P: Parallel[F, A0]): Parallel1.Aux[F, A0] =
-    new Parallel1[F] {
-      type A[x] = A0[x]
-      val parallel = P
-    }
-
-  implicit def parallelFromParallel1[F[_]](implicit P: Parallel1[F]): Parallel[F, P.A] =
-    P.parallel
-}