diff --git a/SHA2.cabal b/SHA2.cabal
--- a/SHA2.cabal
+++ b/SHA2.cabal
@@ -1,7 +1,7 @@
 Name: SHA2
 Synopsis: Fast, incremental SHA hashing for bytestrings
 Description: A zero-copy binding to Aaron Gifford's SHA implementation, including a copy of that implementation
-Version: 0.2.1
+Version: 0.2.2
 License: BSD3
 License-file: COPYING
 Copyright: Copyright (c) 2009 University of Tromsø
@@ -16,8 +16,8 @@
 
 Library
   Build-Depends:
-        base >= 4 && < 5 , bytestring, monads-tf >= 0.0.0.1 && < 0.1,
-        transformers >= 0.1.4.0 && < 0.2, AES >= 0.2
+        base >= 4 && < 5 , bytestring, monads-tf >= 0.1,
+        transformers >= 0.2, AES >= 0.2
   Extensions:
         ForeignFunctionInterface,
         ViewPatterns,