diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -4,9 +4,9 @@
 A command line program for extending the import list of a Haskell source file.
 
 `hsimport` gets the module name and the symbol name to import as arguments,
-parses the given source file by using the library `haskell-src-exts` and than
-tries to only extend the import list if it's necessary. If the symbol is already
-imported or if the whole module is already imported, than the given source file
+parses the given source file using the library `haskell-src-exts` and then tries
+to only extend the import list if it's necessary. If the symbol is already
+imported or if the whole module is already imported, then the given source file
 isn't changed.
 
 Installation
diff --git a/hsimport.cabal b/hsimport.cabal
--- a/hsimport.cabal
+++ b/hsimport.cabal
@@ -1,39 +1,56 @@
 name: hsimport
-version: 0.3
+version: 0.4
 cabal-version: >=1.9.2
 build-type: Simple
 license: BSD3
 license-file: LICENSE
 maintainer: daniel.trstenjak@gmail.com
 synopsis: A command line program for extending the import list of a Haskell source file.
-description: A command line program for extending the import list of a Haskell source file.
+description:
+    A command line program for extending the import list of a Haskell source file.
 category: Utils
 author: Daniel Trstenjak
-data-dir: ""
-extra-source-files: README.md tests/inputFiles/*.hs
-                    tests/goldenFiles/*.hs tests/outputFiles/.gitignore
+extra-source-files:
+    README.md
+    tests/inputFiles/*.hs
+    tests/goldenFiles/*.hs
+    tests/outputFiles/.gitignore
  
 source-repository head
     type: git
     location: https://github.com/dan-t/hsimport
  
 library
-    build-depends: base >=3 && <5, cmdargs >=0.10.5 && <0.11,
-                   haskell-src-exts >=1.14.0 && <1.15, lens >=3.9.2 && <4.2,
-                   mtl >=2.1.2 && <2.2, text >=0.11.3.1 && <1.2,
-                   split >=0.2.2 && <0.3, attoparsec >=0.10.4.0 && <0.12,
-                   directory >=1.2.0.1 && <1.3
-    exposed-modules: HsImport HsImport.Args HsImport.ImportSpec
-                     HsImport.Symbol HsImport.Main
+    build-depends:
+        base >=3 && <5,
+        cmdargs >=0.10.5 && <0.11,
+        haskell-src-exts >=1.14.0 && <1.16,
+        lens >=3.9.2 && <4.3,
+        mtl >=2.1.2 && <2.3,
+        text >=0.11.3.1 && <1.2,
+        split >=0.2.2 && <0.3,
+        attoparsec >=0.10.4.0 && <0.13,
+        directory >=1.2.0.1 && <1.3
+    exposed-modules:
+        HsImport
+        HsImport.Args
+        HsImport.ImportSpec
+        HsImport.Symbol
+        HsImport.Main
     exposed: True
     buildable: True
     cpp-options: -DCABAL
     hs-source-dirs: lib
-    other-modules: HsImport.ImportChange HsImport.Parse Paths_hsimport
+    other-modules:
+        HsImport.ImportChange
+        HsImport.Parse
+        Paths_hsimport
     ghc-options: -W
  
 executable hsimport
-    build-depends: base >=3 && <5, hsimport -any
+    build-depends:
+        base >=3 && <5,
+        hsimport -any
     main-is: Main.hs
     buildable: True
     cpp-options: -DCABAL
@@ -41,12 +58,15 @@
     ghc-options: -W
  
 test-suite hsimport-tests
-    build-depends: base >=3 && <5, tasty >=0.6 && <0.9,
-                   tasty-golden >=2.2.0.1 && <2.3, filepath >=1.3.0.1 && <1.4,
-                   hsimport -any
+    build-depends:
+        base >=3 && <5,
+        tasty >=0.6 && <0.9,
+        tasty-golden >=2.2.0.1 && <2.3,
+        filepath >=1.3.0.1 && <1.4,
+        hsimport -any
     type: exitcode-stdio-1.0
-    hs-source-dirs: tests
     main-is: Main.hs
     buildable: True
+    hs-source-dirs: tests
     ghc-options: -W