diff --git a/patience.cabal b/patience.cabal
--- a/patience.cabal
+++ b/patience.cabal
@@ -1,52 +1,52 @@
-cabal-version: 2.2
-name:
-  patience
-version:
-  0.2.1.0
-license:
-  BSD-3-Clause
-license-file:
-  LICENSE
-synopsis:
-  Patience diff and longest increasing subsequence
-description:
-  This library implements the \"patience diff\" algorithm, as well as the patience
-  algorithm for the longest increasing subsequence problem.
-  .
-  Patience diff computes the difference between two lists, for example the
-  lines of two versions of a source file.  It provides a good balance of
-  performance, nice output for humans, and implementation simplicity.  For more
-  information, see <http://alfedenzo.livejournal.com/170301.html> and
-  <http://bramcohen.livejournal.com/73318.html>.
-category:
-  Algorithms, Text
-author:
-  Keegan McAllister <mcallister.keegan@gmail.com>
-  chessai <chessai1996@gmail.com>
-maintainer:
-  chessai <chessai1996@gmail.com> 
-homepage:
-  https://github.com/chessai/patience
-build-type:
-  Simple
-extra-source-files:
-  CHANGELOG.md
-  README.md
-
-library
-  hs-source-dirs:
-    src
-  exposed-modules:
-    Patience
-    Patience.Map
-  ghc-options:
-    -Wall
-  default-language:
-    Haskell2010
-  build-depends:
-      base >= 4.3 && < 5
-    , containers >= 0.5.9 && < 0.7
-
-source-repository head
-  type: git
-  location: https://github.com/chessai/patience.git
+cabal-version: 2.0
+name:
+  patience
+version:
+  0.2.1.1
+license:
+  BSD3
+license-file:
+  LICENSE
+synopsis:
+  Patience diff and longest increasing subsequence
+description:
+  This library implements the \"patience diff\" algorithm, as well as the patience
+  algorithm for the longest increasing subsequence problem.
+  .
+  Patience diff computes the difference between two lists, for example the
+  lines of two versions of a source file.  It provides a good balance of
+  performance, nice output for humans, and implementation simplicity.  For more
+  information, see <http://alfedenzo.livejournal.com/170301.html> and
+  <http://bramcohen.livejournal.com/73318.html>.
+category:
+  Algorithms, Text
+author:
+  Keegan McAllister <mcallister.keegan@gmail.com>
+  chessai <chessai1996@gmail.com>
+maintainer:
+  chessai <chessai1996@gmail.com> 
+homepage:
+  https://github.com/chessai/patience
+build-type:
+  Simple
+extra-source-files:
+  CHANGELOG.md
+  README.md
+
+library
+  hs-source-dirs:
+    src
+  exposed-modules:
+    Patience
+    Patience.Map
+  ghc-options:
+    -Wall
+  default-language:
+    Haskell2010
+  build-depends:
+      base >= 4.6 && < 5
+    , containers >= 0.5.9 && < 0.7
+
+source-repository head
+  type: git
+  location: https://github.com/chessai/patience.git