diff --git a/getopt-generics.cabal b/getopt-generics.cabal
--- a/getopt-generics.cabal
+++ b/getopt-generics.cabal
@@ -3,7 +3,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           getopt-generics
-version:        0.6.2
+version:        0.6.3
 synopsis:       Simple command line argument parsing
 description:    "getopt-generics" tries to make it very simple to create command line argument parsers. An introductory example can be found in the <https://github.com/zalora/getopt-generics#getopt-generics README>.
 category:       Console, System
@@ -62,6 +62,7 @@
 
     , hspec
     , hspec-expectations
+    , markdown-unlit
     , QuickCheck
     , silently
   ghc-options: -Wall -fno-warn-name-shadowing -threaded -O0 -pgmL markdown-unlit