diff --git a/Data/Conduit/Parser/Internal.hs b/Data/Conduit/Parser/Internal.hs
--- a/Data/Conduit/Parser/Internal.hs
+++ b/Data/Conduit/Parser/Internal.hs
@@ -13,7 +13,9 @@
 import           Control.Exception.Safe    as Exception
 import           Control.Monad
 import           Control.Monad.Error.Class
-import           Control.Monad.Except
+import           Control.Monad.IO.Class    (MonadIO)
+import           Control.Monad.Trans.Class (MonadTrans(..))
+import           Control.Monad.Trans.Except (ExceptT, runExceptT)
 import           Control.Monad.Trans.State
 
 import           Data.Bifunctor
diff --git a/conduit-parse.cabal b/conduit-parse.cabal
--- a/conduit-parse.cabal
+++ b/conduit-parse.cabal
@@ -1,5 +1,5 @@
 name:                conduit-parse
-version:             0.2.1.0
+version:             0.2.1.1
 synopsis:            Parsing framework based on conduit.
 description:         Please refer to README.
 homepage:            https://github.com/k0ral/conduit-parse