diff --git a/commsec.cabal b/commsec.cabal
--- a/commsec.cabal
+++ b/commsec.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                commsec
-version:             0.2.3
+version:             0.2.4
 synopsis:            Provide communications security using symmetric ephemeral keys
 description:         This package provides confidentiallity,
                      integrity and replay detection. Users must
@@ -24,7 +24,7 @@
   exposed-modules:     Network.CommSec, Network.CommSec.Package, Network.CommSec.BitWindow, Network.CommSec.Types
   -- other-modules:       Network.CommSec.BitWindow, Network.CommSec.Types
   build-depends:       base >4.5 && < 5,
-                       cipher-aes128 >= 0.2.5,
+                       cipher-aes128 >= 0.3,
                        bytestring,
                        crypto-api >= 0.12,
                        network >= 2.4.1