diff --git a/wai-app-file-cgi.cabal b/wai-app-file-cgi.cabal
--- a/wai-app-file-cgi.cabal
+++ b/wai-app-file-cgi.cabal
@@ -1,6 +1,6 @@
 cabal-version:      >=1.10
 name:               wai-app-file-cgi
-version:            3.1.11
+version:            3.1.12
 license:            BSD3
 license-file:       LICENSE
 maintainer:         Kazu Yamamoto <kazu@iij.ad.jp>
@@ -25,7 +25,7 @@
 
 source-repository head
     type:     git
-    location: git://github.com/kazu-yamamoto/wai-app-file-cgi
+    location: https://github.com/kazu-yamamoto/wai-app-file-cgi
 
 library
     exposed-modules:  Network.Wai.Application.Classic
@@ -56,7 +56,6 @@
         conduit >=1.1,
         conduit-extra,
         containers,
-        data-default-class,
         directory,
         filepath,
         http-client >=0.5,