diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+# Version 0.4.2
+
+* Added the `Pipes/GZip.hs` file that was missing in 0.4.1.
+
+
 # Version 0.4.1
 
 * Added `Pipes.GZip` module.
diff --git a/pipes-zlib.cabal b/pipes-zlib.cabal
--- a/pipes-zlib.cabal
+++ b/pipes-zlib.cabal
@@ -1,5 +1,5 @@
 name:               pipes-zlib
-version:            0.4.1
+version:            0.4.2
 license:            BSD3
 license-file:       LICENSE
 Copyright:          Copyright (c) Paolo Capriotti 2012,