diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,6 @@
 Version change log.
+=0.18=
+Pull request #83: Updated dependencies, migrated to ansi-wl-pprint.
 
 =0.17.2.0=
 Issue #82: Tighter lexing of identifiers using Unicode character classes (thanks @berdario).
diff --git a/language-ecmascript.cabal b/language-ecmascript.cabal
--- a/language-ecmascript.cabal
+++ b/language-ecmascript.cabal
@@ -1,5 +1,5 @@
 Name:           language-ecmascript
-Version:        0.17.2.0
+Version:        0.18
 Cabal-Version:	>= 1.10
 Copyright:      (c) 2007-2012 Brown University, (c) 2008-2010 Claudiu Saftoiu,
                 (c) 2012-2015 Stevens Institute of Technology, (c) 2016 Eyal Lotem, (c) 2016-2017 Andrey Chudnov
@@ -29,7 +29,7 @@
 Source-repository this
    type: git
    location: git://github.com/jswebtools/language-ecmascript.git
-   tag: 0.17.2.0
+   tag: 0.18
 
 Library
   Hs-Source-Dirs:
@@ -38,14 +38,14 @@
     base >= 4 && < 5,
     mtl >= 1 && < 3,
     parsec > 3 && < 3.2.0,
-    wl-pprint >= 1.2 && < 2,
+    ansi-wl-pprint >= 0.6 && < 1,
     containers == 0.*,
     uniplate >= 1.6 && <1.7,
     data-default-class >= 0.0.1 && < 0.2,
     QuickCheck >= 2.5 && < 3,
     template-haskell >= 2.7 && < 3,
     Diff == 0.3.*,
-    testing-feat >= 0.4.0.2 && < 0.5,
+    testing-feat >= 0.4.0.2 && < 1.1,
     charset >= 0.3
   ghc-options:
     -fwarn-incomplete-patterns
@@ -82,7 +82,7 @@
     base >= 4 && < 5,
     mtl >= 1 && < 3,
     parsec >= 3 && < 3.2.0,
-    wl-pprint >= 1.2 && < 2,
+    ansi-wl-pprint >= 0.6 && < 1,
     containers == 0.*,
     directory >= 1.2 && < 1.4,
     filepath >= 1.3 && < 1.5,
diff --git a/src/Language/ECMAScript3/PrettyPrint.hs b/src/Language/ECMAScript3/PrettyPrint.hs
--- a/src/Language/ECMAScript3/PrettyPrint.hs
+++ b/src/Language/ECMAScript3/PrettyPrint.hs
@@ -10,8 +10,8 @@
                                         ,unsafeInExprStmt
                                         ) where
 
-import qualified Text.PrettyPrint.Leijen as Pretty
-import Text.PrettyPrint.Leijen hiding (Pretty, parens)
+import qualified Text.PrettyPrint.ANSI.Leijen as Pretty
+import Text.PrettyPrint.ANSI.Leijen hiding (Pretty, parens)
 import Language.ECMAScript3.Syntax
 import Prelude hiding (maybe, id)
 import qualified Prelude