diff --git a/relapse.cabal b/relapse.cabal
--- a/relapse.cabal
+++ b/relapse.cabal
@@ -1,5 +1,5 @@
 name:                relapse
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            Sensible RLP encoding
 description:         An implementation of RLP as specified in the Ethereum Wiki, using Attoparsec
 homepage:            https://github.com/iostat/relapse#readme
@@ -18,7 +18,7 @@
   exposed-modules:     Data.RLP
                      , Data.RLP.Types
   build-depends:       base >= 4.7 && < 5
-                     , attoparsec
+                     , attoparsec >= 0.13.1.0  && < 0.14
                      , bytestring
   default-language:    Haskell2010