diff --git a/pkgs/by-name/ce/ceptre/package.nix b/pkgs/by-name/ce/ceptre/package.nix
index f73631ff8d3b..2fc3619afb3d 100644
--- a/pkgs/by-name/ce/ceptre/package.nix
+++ b/pkgs/by-name/ce/ceptre/package.nix
@@ -1,4 +1,9 @@
-{ lib, stdenv, fetchFromGitHub, mlton }:
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  mlton,
+}:
 
 stdenv.mkDerivation {
   pname = "ceptre";