diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+# 0.4.1
+
+* Raise upper bound dependency on `attoparsec`.
+
+
 # 0.4
 
 * Remove `Pipes.Aeson.encode` in favour of `encodeObject` and
diff --git a/pipes-aeson.cabal b/pipes-aeson.cabal
--- a/pipes-aeson.cabal
+++ b/pipes-aeson.cabal
@@ -1,5 +1,5 @@
 name:               pipes-aeson
-version:            0.4
+version:            0.4.1
 license:            BSD3
 license-file:       LICENSE
 copyright:          Copyright (c) Renzo Carbonara 2013-2014
@@ -31,7 +31,7 @@
   other-modules:   Pipes.Aeson.Internal
   build-depends:
       aeson            (>=0.6.1 && <0.8)
-    , attoparsec       (>=0.10  && <0.12)
+    , attoparsec       (>=0.10  && <0.13)
     , base             (>=4.5   && <5.0)
     , pipes            (>=4.1   && <4.2)
     , pipes-attoparsec (>=0.5   && <0.6)