diff --git a/System/Linux/Sendfile.hs b/System/Linux/Sendfile.hs
--- a/System/Linux/Sendfile.hs
+++ b/System/Linux/Sendfile.hs
@@ -1,6 +1,7 @@
 module System.Linux.Sendfile (
     sendfile
   , sendfileFd
+  , FileRange(..)
   ) where
 
 import Data.ByteString (ByteString)
diff --git a/simple-sendfile.cabal b/simple-sendfile.cabal
--- a/simple-sendfile.cabal
+++ b/simple-sendfile.cabal
@@ -1,5 +1,5 @@
 Name:                   simple-sendfile
-Version:                0.2.22
+Version:                0.2.23
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3