diff --git a/bmp.cabal b/bmp.cabal
--- a/bmp.cabal
+++ b/bmp.cabal
@@ -1,5 +1,5 @@
 Name:                bmp
-Version:             1.2.3.1
+Version:             1.2.3.2
 License:             MIT
 License-file:        LICENSE
 Author:              Ben Lippmeier
@@ -20,9 +20,9 @@
 
 Library
   Build-Depends: 
-        base                 >= 4       && < 5,
-        bytestring           >= 0.9.1.5 && < 1.0.0.0,
-        binary               >= 0.5.0.2 && < 0.7.0.0
+        base                 == 4.*,
+        bytestring           == 0.10.*,
+        binary               == 0.5.*
 
   ghc-options:
         -Wall -fno-warn-missing-signatures