diff --git a/Network/Sendfile/Linux.hsc b/Network/Sendfile/Linux.hsc
--- a/Network/Sendfile/Linux.hsc
+++ b/Network/Sendfile/Linux.hsc
@@ -6,7 +6,7 @@
 import Control.Concurrent
 import Control.Exception
 import Control.Monad
-import Data.Int (Int64)
+import Data.Int
 import Data.Word
 import Foreign.C.Error (throwErrno)
 import Foreign.Marshal (alloca)
diff --git a/Network/Sendfile/MacOS.hsc b/Network/Sendfile/MacOS.hsc
--- a/Network/Sendfile/MacOS.hsc
+++ b/Network/Sendfile/MacOS.hsc
@@ -5,7 +5,7 @@
 import Control.Concurrent
 import Control.Exception
 import Control.Monad
-import Data.Int (Int64)
+import Data.Int
 import Foreign.C.Error (eAGAIN, eINTR, getErrno, throwErrno)
 import Foreign.C.Types (CInt)
 import Foreign.Marshal (alloca)
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:                0.0.1
+Version:                0.0.2
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3