diff --git a/Distribution/Cab/VerDB.hs b/Distribution/Cab/VerDB.hs
--- a/Distribution/Cab/VerDB.hs
+++ b/Distribution/Cab/VerDB.hs
@@ -16,7 +16,6 @@
 import Control.Arrow (second)
 import Control.Monad.Trans.Resource (runResourceT)
 import Data.Attoparsec.ByteString.Char8
-import Data.Conduit
 import Data.Conduit.Attoparsec
 import Data.Conduit.Process
 import Data.Map (Map)
@@ -42,8 +41,8 @@
     script = case how of
         InstalledOnly -> "cabal list --installed"
         AllRegistered -> "cabal list"
-    verInfos = runResourceT $ sourceCmd script $$ cabalListParser
-    justOnly = map (second (toVer . fromJust)) . filter (isJust . snd)
+    verInfos = runResourceT $ sourceCmdWithConsumer script cabalListParser
+    justOnly = map (second (toVer . fromJust)) . filter (isJust . snd) . snd
     cabalListParser = sinkParser verinfos
 
 ----------------------------------------------------------------
diff --git a/cab.cabal b/cab.cabal
--- a/cab.cabal
+++ b/cab.cabal
@@ -1,5 +1,5 @@
 Name:                   cab
-Version:                0.2.10
+Version:                0.2.11
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3
@@ -21,16 +21,15 @@
   Default-Language:     Haskell2010
   GHC-Options:          -Wall
   Build-Depends:        base >= 4.0 && < 5
-                      , Cabal
+                      , Cabal >= 1.18
                       , attoparsec >= 0.10
                       , bytestring
                       , conduit >= 1.1
-                      , conduit-extra
+                      , conduit-extra >= 1.1.2
                       , containers
                       , directory
                       , filepath
                       , process
-                      , process-conduit >= 1.1
                       , resourcet
   Exposed-Modules:	Distribution.Cab
                         Distribution.Cab.PkgDB
@@ -53,12 +52,11 @@
                       , attoparsec >= 0.10
                       , bytestring
                       , conduit >= 1.1
-                      , conduit-extra
+                      , conduit-extra >= 1.1.2
                       , containers
                       , directory
                       , filepath
                       , process
-                      , process-conduit >= 1.1
   Other-Modules:	Commands
                         Doc
                         Help
@@ -74,7 +72,7 @@
 --   HS-Source-Dirs:       test
 --   Ghc-Options:          -threaded -Wall
 --   Main-Is:              doctests.hs
---   Build-Depends:        base
+--   Build-Depends:        base >= 4.0 && < 5
 --                       , doctest >= 0.9.3
 
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