diff --git a/a50.cabal b/a50.cabal
--- a/a50.cabal
+++ b/a50.cabal
@@ -1,5 +1,5 @@
 Name:           a50
-Version:        0.4
+Version:        0.5
 License:        GPL
 
 Author:         Ketil Malde
@@ -32,5 +32,5 @@
     Other-Modules:  Gnuplot, Options, Blat, Sort
     Hs-Source-Dirs: src
     Ghc-Options:    -Wall
-    Build-Depends:  base>=3 && <5, bio > 0.4, process, containers, cmdargs >= 0.5, directory
+    Build-Depends:  base>=3 && <5, biopsl, biofasta, process, containers, cmdargs >= 0.5, directory
 
diff --git a/src/Sort.hs b/src/Sort.hs
--- a/src/Sort.hs
+++ b/src/Sort.hs
@@ -1,7 +1,7 @@
 module Sort where
 
 import qualified Data.IntMap as M
-import Bio.Sequence
+import Bio.Sequence.Fasta
 import Data.List (foldl')
 
 type SizeTable = M.IntMap Int