diff --git a/Data/Yaml/Builder.hs b/Data/Yaml/Builder.hs
--- a/Data/Yaml/Builder.hs
+++ b/Data/Yaml/Builder.hs
@@ -14,11 +14,9 @@
 
 import Data.Conduit
 import Data.ByteString (ByteString)
-import qualified Data.ByteString.Lazy as L
 import Text.Libyaml
 import Data.Text (Text)
 import Data.Text.Encoding (encodeUtf8)
-import qualified Data.Conduit.List as CL
 import System.IO.Unsafe (unsafePerformIO)
 import Control.Arrow (second)
 import qualified Data.ByteString.Char8 as S8
diff --git a/Text/Libyaml.hs b/Text/Libyaml.hs
--- a/Text/Libyaml.hs
+++ b/Text/Libyaml.hs
@@ -29,6 +29,8 @@
     , YamlMark (..)
     ) where
 
+import Prelude hiding (pi)
+
 import qualified Data.ByteString.Internal as B
 import qualified Data.ByteString.Char8 as B8
 import qualified Data.ByteString
diff --git a/yaml.cabal b/yaml.cabal
--- a/yaml.cabal
+++ b/yaml.cabal
@@ -1,5 +1,5 @@
 name:            yaml
-version:         0.8.9.3
+version:         0.8.9.4
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>, Anton Ageev <antage@gmail.com>,Kirill Simonov