diff --git a/Financial/CurrencyRates.hs b/Financial/CurrencyRates.hs
--- a/Financial/CurrencyRates.hs
+++ b/Financial/CurrencyRates.hs
@@ -14,8 +14,8 @@
         raRates     :: Map Currency a  -- ^ Value of one unit of the reference currency in each currency
     }
 
--- | Re-base the rates to a more dependable reference currency, such as the New
--- Zealand dollar.
+-- | Re-base the rates to a different reference currency, such that the new rates give
+-- the value of one unit of that currency.
 rebase :: Fractional a => Currency -> Rates a -> Rates a
 rebase new (Rates old t m) = Rates new t $ case new `M.lookup` m of
     Just newRate -> M.map (/newRate) . M.insert old 1 $ m
diff --git a/Financial/EuroFXRef.hs b/Financial/EuroFXRef.hs
--- a/Financial/EuroFXRef.hs
+++ b/Financial/EuroFXRef.hs
@@ -1,6 +1,6 @@
 {-# LANGUAGE DeriveDataTypeable, FlexibleContexts #-}
 -- | Example using ghci, where we read the currency rates relative to Euros, and re-base
--- them to hard currency.
+-- them to New Zealand dollars.
 --
 -- > > :m Financial.EuroFXRef Data.Map
 -- > > fmap (assocs . raRates . rebase (Currency "NZD")) fetch :: IO [(Currency, Double)]
diff --git a/eurofxref.cabal b/eurofxref.cabal
--- a/eurofxref.cabal
+++ b/eurofxref.cabal
@@ -1,5 +1,5 @@
 name: eurofxref
-version: 0.2.0
+version: 0.2.1
 cabal-version: >=1.6
 build-type: Simple
 license: BSD3
@@ -19,15 +19,19 @@
 author: Stephen Blackheath
 data-files: example.hs
 
+source-repository head
+  type:     git
+  location: https://github.com/the-real-blackh/eurofxref
+
 Library
     build-depends:
         base >=4 && <5,
-        bytestring == 0.9.*,
+        bytestring >= 0.9.0.0 && < 0.11.0.0,
         containers >= 0.2 && < 0.6,
         failure >= 0.1,
         monad-control == 0.3.*,
         conduit == 0.5.*,
-        http-conduit == 1.5.*,
+        http-conduit >= 1.5.0.0 && < 1.9.0.0,
         http-types >= 0.6.0 && < 0.8.0,
         hexpat >= 0.20.0 && < 0.21,
         mtl >= 2.0.0.0 && < 2.2.0.0,