diff --git a/repa-io.cabal b/repa-io.cabal
--- a/repa-io.cabal
+++ b/repa-io.cabal
@@ -1,5 +1,5 @@
 Name:                repa-io
-Version:             3.2.2.3
+Version:             3.2.2.201204.1
 License:             BSD3
 License-file:        LICENSE
 Author:              The DPH Team
@@ -11,6 +11,9 @@
 Homepage:            http://repa.ouroborus.net
 Bug-reports:         repa@ouroborus.net
 Description:
+        Legacy version for Haskell Platform 2012.04. You will get better
+        performance if you upgrade to the most recent version of GHC.
+
         Read and write Repa arrays in various formats.
 
 Synopsis:
@@ -18,13 +21,13 @@
 
 Library
   Build-Depends: 
-        base                 == 4.6.*,
-        old-time             == 1.*,
-        repa                 == 3.2.*,
-        bmp                  == 1.2.*,
-        vector               == 0.10.*,
+        base                 == 4.5.*,
+        old-time             == 1.1.*,
+        repa                 == 3.2.2.201204.*,
         bytestring           == 0.10.*,
-        binary               == 0.5.*
+        vector               == 0.10.*,
+        binary               == 0.5.1.*,
+        bmp                  >= 1.2.3.2 && < 1.2.4
 
   ghc-options:
         -O2 -Wall -fno-warn-missing-signatures