diff --git a/itanium-abi.cabal b/itanium-abi.cabal
--- a/itanium-abi.cabal
+++ b/itanium-abi.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name: itanium-abi
-version: 0.1.1.0
+version: 0.1.1.1
 synopsis: An implementation of name mangling/demangling for the Itanium ABI
 license: BSD3
 license-file: LICENSE
@@ -23,7 +23,7 @@
   hs-source-dirs: src
   ghc-options: -Wall
   build-depends: base >= 4 && < 5,
-                 boomerang >= 1.4 && < 1.5,
+                 boomerang >= 1.4.5.6 && < 1.5,
                  text >= 0.11 && < 2,
                  transformers,
                  unordered-containers >= 0.2.3.0 && < 0.3