diff --git a/irc.cabal b/irc.cabal
--- a/irc.cabal
+++ b/irc.cabal
@@ -1,7 +1,7 @@
 name:               irc
 synopsis:           A small library for parsing IRC messages.
 description:        A set of combinators and types for parsing IRC messages.
-version:            0.4.4.2
+version:            0.5.0.0
 category:           Data, Network
 license:            BSD3
 license-file:       LICENSE
@@ -18,7 +18,7 @@
 
 library
   ghc-options:     -Wall
-  build-depends:   base == 4.*, parsec == 2.1.*
+  build-depends:   base == 4.*, parsec >= 2.1 && < 3.2
   exposed-Modules: Network.IRC,
                    Network.IRC.Base,
                    Network.IRC.Commands,