diff --git a/ascii-table.cabal b/ascii-table.cabal
--- a/ascii-table.cabal
+++ b/ascii-table.cabal
@@ -1,40 +1,42 @@
--- This file has been generated from package.yaml by hpack version 0.14.0.
---
--- see: https://github.com/sol/hpack
-
-name:           ascii-table
-version:        0.3.0.0
-synopsis:       ASCII table
-description:    ASCII table
-category:       Data
-homepage:       https://github.com/Sentenai/ascii-table#readme
-bug-reports:    https://github.com/Sentenai/ascii-table/issues
-author:         Sentenai
-maintainer:     mitchellwrosen@gmail.com
-copyright:      2016 Sentenai, Inc.
-license:        BSD3
-license-file:   LICENSE
-build-type:     Simple
-cabal-version:  >= 1.10
+name: ascii-table
+version: 0.3.0.1
+synopsis: ASCII table
+description: Draw an ASCII table
+category: Data
+homepage: https://github.com/Sentenai/ascii-table#readme
+bug-reports: https://github.com/Sentenai/ascii-table/issues
+author: Sentenai
+maintainer: mitchellwrosen@gmail.com
+copyright: 2016 Sentenai, Inc.
+license: BSD3
+license-file: LICENSE
+build-type: Simple
+cabal-version: >= 1.10
+tested-with: GHC==7.4.1, GHC==7.4.2,
+             GHC==7.6.1, GHC==7.6.2, GHC==7.6.3,
+             GHC==7.8.1, GHC==7.8.2, GHC==7.8.3, GHC==7.8.4,
+             GHC==7.10.1, GHC==7.10.2, GHC==7.10.3,
+             GHC==8.0.1, GHC==8.0.2,
+             GHC==8.2.1, GHC==8.2.2,
+             GHC==8.4.1
 
 source-repository head
   type: git
   location: https://github.com/Sentenai/ascii-table
 
 library
-  hs-source-dirs:
-      src
+  hs-source-dirs: src
   ghc-options: -Wall
   build-depends:
-      aeson
-    , base                 >= 4.6 && < 5
-    , containers
-    , dlist
-    , hashable
-    , text
-    , unordered-containers
-    , vector
-    , wl-pprint-extras     >= 1.3 && < 3.6
+      aeson < 1.3
+    , base >= 4.5 && < 5
+    , containers < 0.6
+    , dlist < 0.9
+    , hashable < 1.3
+    , text < 1.3
+    , unordered-containers < 0.3
+    , vector < 0.13
+    , wl-pprint-extras >= 1.3 && < 3.6
   exposed-modules:
       Data.AsciiTable
   default-language: Haskell2010
diff --git a/src/Data/AsciiTable.hs b/src/Data/AsciiTable.hs
--- a/src/Data/AsciiTable.hs
+++ b/src/Data/AsciiTable.hs
@@ -1,9 +1,8 @@
-{-# LANGUAGE BangPatterns           #-}
-{-# LANGUAGE LambdaCase             #-}
-{-# LANGUAGE OverloadedStrings      #-}
-{-# LANGUAGE RecordWildCards        #-}
-{-# LANGUAGE ScopedTypeVariables    #-}
-{-# LANGUAGE ViewPatterns           #-}
+{-# LANGUAGE BangPatterns        #-}
+{-# LANGUAGE OverloadedStrings   #-}
+{-# LANGUAGE RecordWildCards     #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE ViewPatterns        #-}
 
 -- |
 --
@@ -55,22 +54,22 @@
   , displayIO
   ) where
 
-import Control.Applicative   (pure)
-import Data.Aeson            (Object, Value(..))
-import Data.Char             (isPrint)
-import Data.Foldable         (foldl', foldMap)
-import Data.Hashable         (Hashable)
-import Data.HashMap.Strict   (HashMap)
-import Data.List             (transpose)
-import Data.Maybe            (fromMaybe)
-import Data.Monoid           ((<>), mempty)
-import Data.Set              (Set)
-import Data.Text             (Text, pack, unpack)
+import Control.Applicative (pure)
+import Data.Aeson (Object, Value(..))
+import Data.Char (isPrint)
+import Data.Foldable (foldl', foldMap)
+import Data.Hashable (Hashable)
+import Data.HashMap.Strict (HashMap)
+import Data.List (transpose)
+import Data.Maybe (fromMaybe)
+import Data.Monoid ((<>), mempty)
+import Data.Set (Set)
+import Data.Text (Text, pack, unpack)
 import Text.PrettyPrint.Free hiding ((<>), text)
 
-import qualified Data.HashMap.Strict            as HashMap
-import qualified Data.Set                       as Set
-import qualified Data.Vector                    as Vector
+import qualified Data.HashMap.Strict as HashMap
+import qualified Data.Set as Set
+import qualified Data.Vector as Vector
 import qualified Text.PrettyPrint.Free.Internal as PrettyPrint
 
 {-
@@ -369,35 +368,36 @@
 prettyValue = unpack . prettyValue'
  where
   prettyValue' :: Value -> Text
-  prettyValue' = \case
-    Object o ->
-      "{"
-      <> Vector.ifoldr'
-        (\i (k,v) acc ->
-          "\""
-          <> k
-          <> "\":"
-          <> prettyValue' v
-          <> if i == HashMap.size o - 1
-              then acc
-              else ", " <> acc)
-        mempty
-        (Vector.fromList (HashMap.toList o))
-      <> "}"
-    Array a ->
-      "["
-      <> Vector.ifoldr'
-        (\i v acc ->
-          if i == Vector.length a - 1
-            then prettyValue' v <> acc
-            else prettyValue' v <> ", " <> acc)
-        mempty
-        a
-      <> "]"
-    String s -> "\"" <> s <> "\""
-    Number n -> pack (show n)
-    Bool b   -> pack (show b)
-    Null     -> "null"
+  prettyValue' value =
+    case value of
+      Object o ->
+        "{"
+        <> Vector.ifoldr'
+          (\i (k,v) acc ->
+            "\""
+            <> k
+            <> "\":"
+            <> prettyValue' v
+            <> if i == HashMap.size o - 1
+                then acc
+                else ", " <> acc)
+          mempty
+          (Vector.fromList (HashMap.toList o))
+        <> "}"
+      Array a ->
+        "["
+        <> Vector.ifoldr'
+          (\i v acc ->
+            if i == Vector.length a - 1
+              then prettyValue' v <> acc
+              else prettyValue' v <> ", " <> acc)
+          mempty
+          a
+        <> "]"
+      String s -> "\"" <> s <> "\""
+      Number n -> pack (show n)
+      Bool b   -> pack (show b)
+      Null     -> "null"
 
 -- | Flatten an 'Object' so that it contains no top-level 'Object' values.
 flattenObject :: Object -> Object