diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,9 @@
+# Revision history for torsor
+
+## 0.1.0.1 -- 2024-02-06
+
+* Update package metadata.
+
+## 0.1 -- 2017-10-23
+
+* Initial release.
diff --git a/Setup.hs b/Setup.hs
deleted file mode 100644
--- a/Setup.hs
+++ /dev/null
@@ -1,2 +0,0 @@
-import Distribution.Simple
-main = defaultMain
diff --git a/src/Torsor.hs b/src/Torsor.hs
--- a/src/Torsor.hs
+++ b/src/Torsor.hs
@@ -1,4 +1,3 @@
-{-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE FunctionalDependencies #-}
 
 {- | The typeclasses provides in this module are equivalent
@@ -7,11 +6,10 @@
      instead of type families in order to improved error
      messages.
 -}
-
 module Torsor
-  ( Additive(..)
-  , Torsor(..)
-  , Scaling(..)
+  ( Additive (..)
+  , Torsor (..)
+  , Scaling (..)
   ) where
 
 import Data.Int
@@ -23,7 +21,7 @@
   plus :: v -> v -> v
   minus :: v -> v -> v
 
-class Additive v => Torsor p v | p -> v where
+class (Additive v) => Torsor p v | p -> v where
   add :: v -> p -> p
   difference :: p -> p -> v
 
@@ -172,4 +170,3 @@
 
 instance Scaling Int8 Int8 where
   scale = (*)
-
diff --git a/torsor.cabal b/torsor.cabal
--- a/torsor.cabal
+++ b/torsor.cabal
@@ -1,24 +1,32 @@
-name: torsor
-version: 0.1
-synopsis: Torsor Typeclass
-description: Torsor Typeclass
-homepage: https://github.com/andrewthad/torsor#readme
-license: BSD3
-license-file: LICENSE
-author: Andrew Martin
-maintainer: andrew.thaddeus@gmail.com
-copyright: 2017 Andrew Martin
-category: Web
-build-type: Simple
-extra-source-files: README.md
-cabal-version: >=1.10
+cabal-version:   2.4
+name:            torsor
+version:         0.1.0.1
+synopsis:        Torsor Typeclass
+description:     Torsor Typeclass.
+homepage:        https://github.com/byteverse/torsor
+bug-reports:     https://github.com/byteverse/torsor/issues
+license:         BSD-3-Clause
+license-file:    LICENSE
+author:          Andrew Martin
+maintainer:      amartin@layer3com.com
+copyright:       2017 Andrew Martin
+category:        Web
+build-type:      Simple
+extra-doc-files:
+  CHANGELOG.md
+  README.md
 
+common build-settings
+  default-language: Haskell2010
+  ghc-options:      -Wall -Wunused-packages
+
 library
-  hs-source-dirs: src
+  import:          build-settings
+  hs-source-dirs:  src
   exposed-modules: Torsor
-  build-depends: base >= 4.7 && < 5
-  default-language: Haskell2010
+  build-depends:   base >=4.7 && <5
+  ghc-options:     -O2
 
 source-repository head
-  type: git
-  location: https://github.com/andrewthad/torsor
+  type:     git
+  location: git://github.com/byteverse/torsor.git