diff --git a/ghc-core.cabal b/ghc-core.cabal
--- a/ghc-core.cabal
+++ b/ghc-core.cabal
@@ -1,5 +1,5 @@
 name:           ghc-core
-version:        0.4.1
+version:        0.4.2
 license:        BSD3
 license-file:   LICENSE
 author:         Don Stewart
@@ -23,13 +23,15 @@
 build-type:     Simple
 cabal-version:  >= 1.2
 
+-- Technically, hscolour-1.10.* will work too if we replace the
+-- 'NoLit' constructor with 'False' in the call to 'hscolour'.
 executable ghc-core
     build-depends:  base,
-                    process,
+                    process >=1.0.1,
                     pcre-light,
-                    hscolour >=1.10,
+                    hscolour >=1.11,
                     directory,
                     filepath
     main-is:        ghc-core.hs
     ghc-options:    -Wall
-    extensions:     PatternGuards    
+    extensions:     PatternGuards
diff --git a/ghc-core.hs b/ghc-core.hs
--- a/ghc-core.hs
+++ b/ghc-core.hs
@@ -41,6 +41,8 @@
 
 import Language.Haskell.HsColour
 import Language.Haskell.HsColour.Colourise
+-- 'Literate' is hscolour-1.11 only. 'Bool' was used in hscolour-1.10
+import Language.Haskell.HsColour.Options (Literate(..))
 
 ------------------------------------------------------------------------
 --
@@ -123,10 +125,13 @@
                                        then do asm <- readFile (init s)
                                                return ((strs' ++ asm), Just $ takeDirectory s)
                                        else return (strs', Just $ takeDirectory s)
-
+    
+    -- If we replace the 'NoLit' constructor with 'False' (and
+    -- remove the include for the Literate type), then this will
+    -- work with older hscolour-1.10.* versions.
     let nice = hscolour
                 (optFormat opts)
-                colourPrefs False True False [] strs
+                colourPrefs False True NoLit [] strs
 
     bracket
         (openTempFile "/tmp" "ghc-core-XXXX.hcr")