diff --git a/sifflet.cabal b/sifflet.cabal
--- a/sifflet.cabal
+++ b/sifflet.cabal
@@ -1,10 +1,10 @@
 name: sifflet
-version: 2.2.0
+version: 2.2.1
 cabal-version: >= 1.8
 build-type: Simple
 license: BSD3
 license-file: LICENSE
-copyright: (C) 2009-2012 Gregory D. Weber
+copyright: (C) 2009-2014 Gregory D. Weber
 author: Gregory D. Weber
 maintainer: "gdweber" ++ drop 3 "abc@" ++ "iue.edu"
 bug-reports: mailto:"gdweber" ++ drop 3 "abc@" ++ "iue.edu"
@@ -53,7 +53,7 @@
     sifflet-lib >= 2.2 && < 2.3
 
   if !os(windows)
-    build-depends: unix >= 2.3 && < 2.6
+    build-depends: unix >= 2.3 && < 2.7
   buildable: True
   extensions: ForeignFunctionInterface CPP
   ghc-options: -Wall