diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,9 @@
+## 0.1.5 [2021.02.17]
+* The build-type has been changed from `Custom` to `Simple`.
+  To achieve this, the `doctests` test suite has been removed in favor of using
+  [`cabal-docspec`](https://github.com/phadej/cabal-extras/tree/master/cabal-docspec)
+  to run the doctests.
+
 ## 0.1.4 [2020.10.02]
 * Allow building with `template-haskell-2.17.0.0` (GHC 9.0).
 
diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -1,7 +1,7 @@
 structs
 ==========
 
-[![Hackage](https://img.shields.io/hackage/v/structs.svg)](https://hackage.haskell.org/package/structs) [![Build Status](https://secure.travis-ci.org/ekmett/structs.png?branch=master)](http://travis-ci.org/ekmett/structs)
+[![Hackage](https://img.shields.io/hackage/v/structs.svg)](https://hackage.haskell.org/package/structs) [![Build Status](https://github.com/ekmett/structs/workflows/Haskell-CI/badge.svg)](https://github.com/ekmett/structs/actions?query=workflow%3AHaskell-CI)
 
 This package explores strict mutable data structures in Haskell.
 
diff --git a/Setup.lhs b/Setup.lhs
--- a/Setup.lhs
+++ b/Setup.lhs
@@ -1,34 +1,7 @@
-\begin{code}
-{-# LANGUAGE CPP #-}
-{-# OPTIONS_GHC -Wall #-}
-module Main (main) where
-
-#ifndef MIN_VERSION_cabal_doctest
-#define MIN_VERSION_cabal_doctest(x,y,z) 0
-#endif
-
-#if MIN_VERSION_cabal_doctest(1,0,0)
-
-import Distribution.Extra.Doctest ( defaultMainWithDoctests )
-main :: IO ()
-main = defaultMainWithDoctests "doctests"
-
-#else
-
-#ifdef MIN_VERSION_Cabal
--- If the macro is defined, we have new cabal-install,
--- but for some reason we don't have cabal-doctest in package-db
---
--- Probably we are running cabal sdist, when otherwise using new-build
--- workflow
-import Warning ()
-#endif
-
-import Distribution.Simple
-
-main :: IO ()
-main = defaultMain
+#!/usr/bin/runhaskell
+> module Main (main) where
 
-#endif
+> import Distribution.Simple
 
-\end{code}
+> main :: IO ()
+> main = defaultMain
diff --git a/Warning.hs b/Warning.hs
deleted file mode 100644
--- a/Warning.hs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Warning
-  {-# WARNING ["You are configuring this package without cabal-doctest installed.",
-               "The doctests test-suite will not work as a result.",
-               "To fix this, install cabal-doctest before configuring."] #-}
-  () where
diff --git a/src/Data/Struct/Internal/Label.hs b/src/Data/Struct/Internal/Label.hs
--- a/src/Data/Struct/Internal/Label.hs
+++ b/src/Data/Struct/Internal/Label.hs
@@ -22,6 +22,7 @@
 import Data.Word
 
 -- $setup
+-- >>> import Data.Struct.Internal
 -- >>> import Data.Struct.Internal.Label
 
 #ifdef HLINT
diff --git a/structs.cabal b/structs.cabal
--- a/structs.cabal
+++ b/structs.cabal
@@ -1,6 +1,6 @@
 name:          structs
 category:      Data
-version:       0.1.4
+version:       0.1.5
 license:       BSD3
 cabal-version: 1.22
 license-file:  LICENSE
@@ -10,7 +10,7 @@
 homepage:      http://github.com/ekmett/structs/
 bug-reports:   http://github.com/ekmett/structs/issues
 copyright:     Copyright (C) 2015-2017 Edward A. Kmett
-build-type:    Custom
+build-type:    Simple
 tested-with:   GHC == 8.0.2
              , GHC == 8.2.2
              , GHC == 8.4.4
@@ -25,23 +25,11 @@
   .hlint.yaml
   CHANGELOG.markdown
   README.markdown
-  Warning.hs
 
-custom-setup
-  setup-depends:
-    base          >= 4.9 && <5,
-    Cabal         >= 1.10,
-    cabal-doctest >= 1.0.1 && <1.1
-
 source-repository head
   type: git
   location: git://github.com/ekmett/structs.git
 
--- You can disable the doctests test suite with -f-test-doctests
-flag test-doctests
-  default: True
-  manual: True
-
 library
   build-depends:
     base >= 4.9 && < 5,
@@ -65,26 +53,6 @@
   ghc-options: -Wall -fwarn-monomorphism-restriction -fwarn-identities -fwarn-incomplete-record-updates -fwarn-incomplete-uni-patterns -fno-warn-wrong-do-bind
   hs-source-dirs: src
   default-language: Haskell2010
-
-test-suite doctests
-  type:           exitcode-stdio-1.0
-  main-is:        doctests.hs
-  ghc-options:    -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010
-
-  x-doctest-options: -fobject-code
-
-  if !flag(test-doctests)
-    buildable: False
-  else
-    build-depends:
-      base,
-      directory >= 1.0,
-      doctest >= 0.9.1,
-      filepath,
-      parallel,
-      structs
 
 test-suite unit
   type: exitcode-stdio-1.0
diff --git a/tests/doctests.hs b/tests/doctests.hs
deleted file mode 100644
--- a/tests/doctests.hs
+++ /dev/null
@@ -1,25 +0,0 @@
------------------------------------------------------------------------------
--- |
--- Module      :  Main (doctests)
--- Copyright   :  (C) 2012-14 Edward Kmett
--- License     :  BSD-style (see the file LICENSE)
--- Maintainer  :  Edward Kmett <ekmett@gmail.com>
--- Stability   :  provisional
--- Portability :  portable
---
--- This module provides doctests for a project based on the actual versions
--- of the packages it was built with. It requires a corresponding Setup.lhs
--- to be added to the project
------------------------------------------------------------------------------
-module Main where
-
-import Build_doctests (flags, pkgs, module_sources)
-import Data.Foldable (traverse_)
-import Test.DocTest
-
-main :: IO ()
-main = do
-    traverse_ putStrLn args
-    doctest args
-  where
-    args = flags ++ pkgs ++ module_sources