diff --git a/mealy.cabal b/mealy.cabal
--- a/mealy.cabal
+++ b/mealy.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.0
 name: mealy
-version: 0.5.0.1
+version: 0.5.1.0
 license: BSD-3-Clause
 license-file: LICENSE
 copyright: Tony Day (c) 2013
@@ -23,14 +23,13 @@
 
 build-type: Simple
 tested-with:
-  ghc ==9.6.7
-  ghc ==9.8.4
-  ghc ==9.10.2
+  ghc ==9.10.3
   ghc ==9.12.2
+  ghc ==9.14.1
 
 extra-doc-files:
   ChangeLog.md
-  readme.org
+  readme.md
 
 source-repository head
   type: git
@@ -46,29 +45,9 @@
     -Wpartial-fields
     -Wredundant-constraints
 
-common ghc2024-additions
-  default-extensions:
-    DataKinds
-    DerivingStrategies
-    DisambiguateRecordFields
-    ExplicitNamespaces
-    GADTs
-    LambdaCase
-    MonoLocalBinds
-    RoleAnnotations
-
-common ghc2024-stanza
-  if impl(ghc >=9.10)
-    default-language:
-      GHC2024
-  else
-    import: ghc2024-additions
-    default-language:
-      GHC2021
-
 library
   import: ghc-options-stanza
-  import: ghc2024-stanza
+  default-language: GHC2024
   hs-source-dirs: src
   build-depends:
     adjunctions >=4.0 && <4.5,
@@ -90,18 +69,6 @@
     Data.Mealy.Quantiles
     Data.Mealy.Simulate
 
-test-suite doctests
-  import: ghc2024-stanza
-  main-is: doctests.hs
-  hs-source-dirs: test
-  build-depends:
-    base >=4.14 && <5,
-    doctest-parallel >=0.3 && <0.5,
-    mealy,
-
-  ghc-options: -threaded
-  type: exitcode-stdio-1.0
-
 common ghc-options-exe-stanza
   ghc-options:
     -fforce-recomp
@@ -113,24 +80,16 @@
 executable mealy-perf
   import: ghc-options-exe-stanza
   import: ghc-options-stanza
-  import: ghc2024-stanza
+  default-language: GHC2024
   main-is: mealy-perf.hs
   hs-source-dirs: test
   build-depends:
     base >=4.7 && <5,
-    clock >=0.8 && <0.9,
     containers >=0.6 && <0.9,
-    deepseq >=1.4.4 && <1.6,
-    formatn >=0.2.1 && <0.4,
-    harpie >=0.1 && <0.2,
-    harpie-numhask >=0.1 && <0.2,
     mealy,
-    mtl >=2.2.2 && <2.4,
-    optics-core >=0.4 && <0.5,
     optparse-applicative >=0.17 && <0.20,
     perf >=0.14 && <0.15,
     tdigest >=0.2.1 && <0.4,
     text >=1.2 && <2.2,
-    time >=1.10 && <1.15,
 
   ghc-options: -O2
diff --git a/readme.md b/readme.md
new file mode 100644
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,34 @@
+# mealy
+
+[![Hackage](https://img.shields.io/hackage/v/mealy.svg)](https://hackage.haskell.org/package/mealy) [![Build Status](https://github.com/tonyday567/mealy/actions/workflows/haskell-ci.yml/badge.svg)](https://github.com/tonyday567/mealy/actions/workflows/haskell-ci.yml)
+
+A 'Mealy' is a triple of functions
+
+- (a -> b) **inject**: Convert (initial) input into the (initial) state type.
+- (b -> a -> b) **step**: Update state given prior state and (new) input.
+- (c -> b) **extract**: Convert state to the output type.
+
+A sum, for example, looks like `M id (+) id` where the first id is the initial injection and the second id is the covariant extraction.
+
+This library provides support for computing statistics (such as an average or a standard deviation) as current state within a mealy context.
+
+## Usage
+
+Usage is to supply a decay function representing the relative weights of recent values versus older ones, in the manner of exponentially-weighted averages. The library attempts to be polymorphic in the statistic which can be combined in applicative style.
+
+```haskell
+import Prelude
+import Data.Mealy
+```
+
+```haskell
+fold ((,) <$> ma 0.9 <*> std 0.9) [1..100::Double]
+```
+
+```
+(91.00265621044142,9.472822805289121)
+```
+
+## Reference
+
+[Finite State Transducers](https://stackoverflow.com/questions/27997155/finite-state-transducers-in-haskell)
diff --git a/readme.org b/readme.org
deleted file mode 100644
--- a/readme.org
+++ /dev/null
@@ -1,33 +0,0 @@
-#+TITLE: mealy
-
-[[https://hackage.haskell.org/package/mealy][file:https://img.shields.io/hackage/v/mealy.svg]] [[https://github.com/tonyday567/mealy/actions/workflows/haskell-ci.yml][file:https://github.com/tonyday567/mealy/actions/workflows/haskell-ci.yml/badge.svg]]
-
-A 'Mealy' is a triple of functions
-
-- (a -> b) *inject*: Convert (initial) input into the (initial) state type.
-- (b -> a -> b) *step*: Update state given prior state and (new) input.
-- (c -> b) *extract*: Convert state to the output type.
-
-A sum, for example, looks like ~M id (+) id~ where the first id is the initial injection and the second id is the covariant extraction.
-
-This library provides support for computing statistics (such as an average or a standard deviation) as current state within a mealy context.
-
-* Usage
-
-Usage is to supply a decay function representing the relative weights of recent values versus older ones, in the manner of exponentially-weighted averages. The library attempts to be polymorphic in the statistic which can be combined in applicative style.
-
-#+begin_src haskell :results output
-import Prelude
-import Data.Mealy
-#+end_src
-
-#+begin_src haskell :results output
-fold ((,) <$> ma 0.9 <*> std 0.9) [1..100::Double]
-#+end_src
-
-#+RESULTS:
-: (91.00265621044142,9.472822805289121)
-
-* Reference
-
-[[https://stackoverflow.com/questions/27997155/finite-state-transducers-in-haskell][Finite State Transducers]]
diff --git a/test/doctests.hs b/test/doctests.hs
deleted file mode 100644
--- a/test/doctests.hs
+++ /dev/null
@@ -1,8 +0,0 @@
-module Main where
-
-import System.Environment (getArgs)
-import Test.DocTest (mainFromCabal)
-import Prelude (IO, (=<<))
-
-main :: IO ()
-main = mainFromCabal "mealy" =<< getArgs