diff --git a/Data/Vector/Unboxed/Deriving.hs b/Data/Vector/Unboxed/Deriving.hs
--- a/Data/Vector/Unboxed/Deriving.hs
+++ b/Data/Vector/Unboxed/Deriving.hs
@@ -25,13 +25,17 @@
 succinctly:
 
 >derivingUnbox "Complex"
->    [d| (Unbox a) ⇒ Complex a → (a, a) |]
+>    [t| (Unbox a) ⇒ Complex a → (a, a) |]
 >    [| \ (r :+ i) → (r, i) |]
 >    [| \ (r, i) → r :+ i |]
 
 Requires the @MultiParamTypeClasses@, @TemplateHaskell@, @TypeFamilies@ and
-probably the @FlexibleInstances@ @LANGUAGE@ extensions.
+probably the @FlexibleInstances@ @LANGUAGE@ extensions. Older versions of
+GHC needs the 'G.Vector' and 'M.MVector' class method names in scope:
 
+>import qualified Data.Vector.Generic
+>import qualified Data.Vector.Generic.Mutable
+
 -}
 
 module Data.Vector.Unboxed.Deriving (derivingUnbox) where
@@ -70,7 +74,7 @@
 additional @Default@ (see the @data-default@ package) constraint. Thus:
 
 >derivingUnbox "Maybe"
->    [d| (Default a, Unbox a) ⇒ Maybe a → (Bool, a) |]
+>    [t| (Default a, Unbox a) ⇒ Maybe a → (Bool, a) |]
 >    [| maybe (False, def) (\ x → (True, x)) |]
 >    [| \ (b, x) → if b then Just x else Nothing |]
 -}
diff --git a/vector-th-unbox.cabal b/vector-th-unbox.cabal
--- a/vector-th-unbox.cabal
+++ b/vector-th-unbox.cabal
@@ -1,5 +1,5 @@
 name:           vector-th-unbox
-version:        0.2
+version:        0.2.0.1
 synopsis:       Deriver for Data.Vector.Unboxed using Template Haskell
 description:
     A Template Haskell deriver for unboxed vectors, given a pair of coercion