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:                0.2.7
+Version:                0.2.8
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3
@@ -40,8 +40,7 @@
         Build-Depends:  unix
       else
         Other-Modules:  Network.Sendfile.Fallback
-        Build-Depends:  bytestring      >= 0.9   && < 0.10
-                      , conduit         >= 0.4.1 && < 0.6
+        Build-Depends:  conduit         >= 0.4.1 && < 0.6
                       , transformers    >= 0.2.2 && < 0.4
 
 Test-Suite spec
@@ -57,7 +56,6 @@
                       , conduit
                       , directory
                       , hspec >= 1.3
-                      , hspec-expectations
                       , network
                       , network-conduit
                       , process