diff --git a/Control/Monad/Trans/Either.hs b/Control/Monad/Trans/Either.hs
--- a/Control/Monad/Trans/Either.hs
+++ b/Control/Monad/Trans/Either.hs
@@ -12,7 +12,6 @@
 import Data.Foldable
 import Data.Function (on)
 import Data.Traversable
-import Data.Monoid
 import Data.Semigroup
 import Control.Monad.Trans.Class
 -- import Control.Monad.Error.Class
diff --git a/either.cabal b/either.cabal
--- a/either.cabal
+++ b/either.cabal
@@ -1,6 +1,6 @@
 name:          either
 category:      Control, Monads
-version:       0.2.2.3
+version:       0.2.3
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -19,11 +19,11 @@
 
 library
   build-depends: 
-    base >= 4 && < 5,
-    data-default >= 0.2.0.1 && < 0.3,
-    semigroups >= 0.7.1 && < 0.8,
-    semigroupoids >= 1.2.4 && < 1.3,
-    transformers >= 0.2.0 && <= 0.3
+    base          >= 4 && < 5,
+    data-default  >= 0.2.0.1 && < 0.3,
+    semigroups    >= 0.8 && < 0.9,
+    semigroupoids >= 1.2.6 && < 1.3,
+    transformers  >= 0.2.0 && <= 0.3
 
   extensions: CPP