diff --git a/seqloc.cabal b/seqloc.cabal
--- a/seqloc.cabal
+++ b/seqloc.cabal
@@ -1,15 +1,15 @@
 Name:                seqloc
-Version:             0.1
+Version:             0.2
 Cabal-Version:       >= 1.2
 Synopsis:            Handle sequence locations for bioinformatics
 Description:         Handle sequence locations for bioinformatics
 Homepage:            http://www.ingolia-lab.org/software/seqloc/
-License:             BSD3
+License:             MIT
 License-file:        LICENSE
 Author:              Nick Ingolia
 Maintainer:          nick@ingolia.org
 Build-Type:          Simple
-Cabal-Version:       >= 1.2
+Cabal-Version:       >= 1.4
 
 Category:            Bioinformatics
 
diff --git a/src/Bio/SeqLoc/Position.hs b/src/Bio/SeqLoc/Position.hs
--- a/src/Bio/SeqLoc/Position.hs
+++ b/src/Bio/SeqLoc/Position.hs
@@ -24,6 +24,7 @@
 import Control.Monad (liftM)
 import qualified Data.ByteString as BSW
 import qualified Data.ByteString.Char8 as BS
+import Data.Int (Int64)
 
 import qualified Data.Attoparsec.Char8 as AP (isDigit_w8)
 import qualified Data.Attoparsec.Zepto as ZP
@@ -33,7 +34,7 @@
 import Bio.SeqLoc.Strand
 
 -- | Unstranded offset in a sequence
-newtype Offset = Offset { unOffset :: Int } deriving (Eq, Ord, Show, Read, Num, Real, Enum, Integral)
+newtype Offset = Offset { unOffset :: Int64 } deriving (Eq, Ord, Show, Read, Num, Real, Enum, Integral)
 
 instance LocRepr Offset where
   repr = BS.pack . show . unOffset