diff --git a/.travis.yml b/.travis.yml
new file mode 100644
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,1 @@
+language: haskell
diff --git a/Data/Void.hs b/Data/Void.hs
--- a/Data/Void.hs
+++ b/Data/Void.hs
@@ -9,8 +9,9 @@
 -- Portability :  portable
 --
 ----------------------------------------------------------------------------
-module Data.Void (Void, absurd, vacuous) where
+module Data.Void (Void, absurd, vacuous, vacuousM) where
 
+import Control.Monad (liftM)
 import Data.Semigroup (Semigroup(..))
 import Data.Ix
 
@@ -23,11 +24,11 @@
 #endif
 
 #if __GLASGOW_HASKELL__ < 700
-data Void = Void !Void 
+data Void = Void !Void
 #else
 newtype Void = Void Void
 #endif
-  deriving 
+  deriving
   ( Eq, Ord, Show, Read
 #ifdef LANGUAGE_DeriveDataTypeable
   , Data, Typeable
@@ -47,6 +48,13 @@
 vacuous = fmap absurd
 #endif
 
+vacuousM :: Monad m => m Void -> m a
+#ifdef __GLASGOW_HASKELL__
+vacuousM = unsafeCoerce
+#else
+vacuousM = liftM absurd
+#endif
+
 instance Semigroup Void where
   a <> _ = a
   times1p _ a = a
@@ -55,4 +63,4 @@
   range _ = []
   index _ = absurd
   inRange _ = absurd
-  rangeSize _ = 0 
+  rangeSize _ = 0
diff --git a/void.cabal b/void.cabal
--- a/void.cabal
+++ b/void.cabal
@@ -1,6 +1,6 @@
 name:          void
 category:      Data Structures
-version:       0.5.5.1
+version:       0.5.6
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -8,10 +8,13 @@
 maintainer:    Edward A. Kmett <ekmett@gmail.com>
 stability:     portable
 homepage:      http://github.com/ekmett/void
+bug-reports:   http://github.com/ekmett/void/issues
 copyright:     Copyright (C) 2008-2011 Edward A. Kmett
 synopsis:      A Haskell 98 logically uninhabited data type
 description:   A Haskell 98 logically uninhabited data type. Used to indicate that a given term should not exist.
 build-type:    Simple
+
+extra-source-files: .travis.yml
 
 source-repository head
   type: git