diff --git a/glpk-headers.cabal b/glpk-headers.cabal
--- a/glpk-headers.cabal
+++ b/glpk-headers.cabal
@@ -1,60 +1,51 @@
-cabal-version: 1.12
-
--- This file has been generated from package.yaml by hpack version 0.33.0.
---
--- see: https://github.com/sol/hpack
---
--- hash: 201535c79f43ed6acaf4fa8a43ee68a5958c4c3bbc5118381c9c3cbfdfa226df
+cabal-version:      1.12
+name:               glpk-headers
+version:            0.4.1
+license:            BSD3
+license-file:       LICENSE
+copyright:          2018 Patrick Steele
+maintainer:         steele.pat@gmail.com
+author:             Patrick Steele
+homepage:           https://github.com/prsteele/glpk-headers-haskell#readme
+bug-reports:        https://github.com/prsteele/glpk-headers-haskell/issues
+synopsis:           Low-level Haskell bindings to GLPK.
+description:
+    Please see the README on GitHub at <https://github.com/prsteele/glpk-headers-haskell#readme>
 
-name:           glpk-headers
-version:        0.4.0
-synopsis:       Low-level Haskell bindings to GLPK.
-description:    Please see the README on GitHub at <https://github.com/prsteele/glpk-headers-haskell#readme>
-category:       Math
-homepage:       https://github.com/prsteele/glpk-headers-haskell#readme
-bug-reports:    https://github.com/prsteele/glpk-headers-haskell/issues
-author:         Patrick Steele
-maintainer:     steele.pat@gmail.com
-copyright:      2018 Patrick Steele
-license:        BSD3
-license-file:   LICENSE
-build-type:     Simple
+category:           Math
+build-type:         Simple
 extra-source-files:
     README.md
     ChangeLog.md
 
 source-repository head
-  type: git
-  location: https://github.com/prsteele/glpk-headers-haskell
+    type:     git
+    location: https://github.com/prsteele/glpk-headers-haskell
 
 library
-  exposed-modules:
-      Math.Programming.Glpk.Header
-  other-modules:
-      Paths_glpk_headers
-  hs-source-dirs:
-      src
-  build-depends:
-      base >=4.7 && <5
-    , derive-storable >=0.1.2.0 && <0.2
-  default-language: Haskell2010
+    exposed-modules:  Math.Programming.Glpk.Header
+    hs-source-dirs:   src
+    other-modules:    Paths_glpk_headers
+    default-language: Haskell2010
+    build-depends:
+        base >=4.7 && <5,
+        derive-storable >=0.1.2.0 && <0.3
 
 test-suite GlpkHs-test
-  type: exitcode-stdio-1.0
-  main-is: Driver.hs
-  other-modules:
-      Diet
-      Paths_glpk_headers
-  hs-source-dirs:
-      test
-  ghc-options: -threaded -rtsopts -with-rtsopts=-N
-  extra-libraries:
-      glpk
-  build-depends:
-      base >=4.7 && <5
-    , derive-storable >=0.1.2.0 && <0.2
-    , glpk-headers
-    , tasty
-    , tasty-discover
-    , tasty-hunit
-  default-language: Haskell2010
+    type:             exitcode-stdio-1.0
+    main-is:          Driver.hs
+    hs-source-dirs:   test
+    other-modules:
+        Diet
+        Paths_glpk_headers
+
+    default-language: Haskell2010
+    extra-libraries:  glpk
+    ghc-options:      -threaded -rtsopts -with-rtsopts=-N
+    build-depends:
+        base >=4.7 && <5,
+        derive-storable >=0.1.2.0 && <0.3,
+        glpk-headers -any,
+        tasty >=1.2.3 && <1.3,
+        tasty-discover >=4.2.1 && <4.3,
+        tasty-hunit >=0.10.0.2 && <0.11