diff --git a/library/ListT/Text.hs b/library/ListT/Text.hs
--- a/library/ListT/Text.hs
+++ b/library/ListT/Text.hs
@@ -13,7 +13,7 @@
 -- |
 -- A transformation of a stream of byte-strings 
 -- to a stream of text chunks decoded using UTF-8.
-decodeUTF8 :: Monad m => Transformation m ByteString Text
+decodeUTF8 :: Monad m => ListT m ByteString -> ListT m Text
 decodeUTF8 =
   loop TE.streamDecodeUtf8
   where
diff --git a/list-t-text.cabal b/list-t-text.cabal
--- a/list-t-text.cabal
+++ b/list-t-text.cabal
@@ -1,7 +1,7 @@
 name:
   list-t-text
 version:
-  0.2.0.2
+  0.2.1
 synopsis:
   A streaming text codec
 category:
@@ -39,18 +39,16 @@
   other-modules:
   exposed-modules:
     ListT.Text
-  ghc-options:
-    -funbox-strict-fields
   default-extensions:
-    Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFoldable, DeriveFunctor, DeriveGeneric, DeriveTraversable, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, ImpredicativeTypes, LambdaCase, LiberalTypeSynonyms, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators
+    Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFoldable, DeriveFunctor, DeriveGeneric, DeriveTraversable, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, LambdaCase, LiberalTypeSynonyms, MagicHash, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators, UnboxedTuples
   default-language:
     Haskell2010
   build-depends:
     bytestring >= 0.10 && < 0.11,
     text >= 1 && < 1.3,
-    list-t == 0.4.*,
+    list-t >= 0.4 && < 2,
     mtl-prelude >= 1 && < 3,
-    base-prelude >= 0.1.19 && < 0.2
+    base-prelude >= 0.1.19 && < 2
 
 
 test-suite hspec
@@ -63,14 +61,13 @@
   ghc-options:
     -threaded
     "-with-rtsopts=-N"
-    -funbox-strict-fields
   default-extensions:
-    Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFoldable, DeriveFunctor, DeriveGeneric, DeriveTraversable, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, ImpredicativeTypes, LambdaCase, LiberalTypeSynonyms, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators
+    Arrows, BangPatterns, ConstraintKinds, DataKinds, DefaultSignatures, DeriveDataTypeable, DeriveFoldable, DeriveFunctor, DeriveGeneric, DeriveTraversable, EmptyDataDecls, FlexibleContexts, FlexibleInstances, FunctionalDependencies, GADTs, GeneralizedNewtypeDeriving, LambdaCase, LiberalTypeSynonyms, MagicHash, MultiParamTypeClasses, MultiWayIf, NoImplicitPrelude, NoMonomorphismRestriction, OverloadedStrings, PatternGuards, ParallelListComp, QuasiQuotes, RankNTypes, RecordWildCards, ScopedTypeVariables, StandaloneDeriving, TemplateHaskell, TupleSections, TypeFamilies, TypeOperators, UnboxedTuples
   default-language:
     Haskell2010
   build-depends:
     -- 
-    hspec == 2.1.*,
+    hspec >= 2.1 && < 3,
     QuickCheck >= 2.6 && < 2.9,
     quickcheck-instances,
     --