diff --git a/flower.cabal b/flower.cabal
--- a/flower.cabal
+++ b/flower.cabal
@@ -1,5 +1,5 @@
 Name:           flower
-Version:        0.3
+Version:        0.4
 License:        GPL
 Cabal-Version:  >= 1.6
 Author:         Ketil Malde
@@ -23,7 +23,7 @@
                 The Darcs repository is at <http://malde.org/~ketil/biohaskell/flower>.
 
 HomePage:       http://malde.org/~ketil/biohaskell/flower
-Build-Depends:  bio >= 0.4.2, base >=3 && <5, array >= 0.1, bytestring >= 0.9.1, binary == 0.4.*, random, cmdargs, containers
+Build-Depends:  bio >= 0.4.2, base >=3 && <5, array >= 0.1, bytestring >= 0.9.1, binary == 0.4.*, random, cmdargs <= 0.1.1, containers
 Build-Type:     Simple
 Tested-with:    GHC==6.8.3
 
diff --git a/src/Flowt.hs b/src/Flowt.hs
--- a/src/Flowt.hs
+++ b/src/Flowt.hs
@@ -21,7 +21,7 @@
 import System.Console.CmdArgs
 
 version :: String
-version = "flowt v0, copyright 2009-2010 Ketil Malde"
+version = "flowt v0.4, copyright 2009-2010 Ketil Malde"
 
 type FingerPrints = IntSet
 type DupMap = IntMap [ReadBlock]
@@ -77,7 +77,7 @@
   when (clusters opts) $ BC.writeFile "clusters.txt" $ 
     BC.unlines $ map (BC.unwords . map (read_name . read_header)) $ cg
   return ()
-  
+
 gensum f ds = write $ unlines $ map showcluster $ M.assocs ds
   where write = if f == "-" then putStrLn else writeFile f
         showcluster (k,v) = let a = averageflow v